I notice that single quotes cause simplejson's loads function to fail:
我注意到单引号导致simplejson的加载函数失败:
>>> import simplejson as json
>>> json.loads("\"foo\"")
'foo'
>>> json.loads("\'foo\'")
Traceback (most recent call last):
...
ValueError: No JSON object could be decoded
I'm parsing things like: foo = ["a", "b", "c"] from a textfile into lists in Python and would like to also accept foo = ['a', 'b', 'c']. simplejson is convenient for making foo automatically into a list.
我正在用Python将foo = ["a"、"b"、"c"]从一个文本文件解析成列表，并且还想接受foo = ['a'、'b'、'c']。simplejson可以方便地将foo自动生成列表。
How can I get loads to accept single quotes, or automatically substitute double for single quotes without wrecking the input? thanks.
我怎样才能让负载接受单引号，或者在不破坏输入的情况下自动替换单引号?谢谢。
4 个解决方案
#1
26
Use the proper tool for the job, you are not parsing JSON but Python, so use ast.literal_eval() instead:
使用合适的工具完成任务，您不是在解析JSON，而是在解析Python，所以使用ast.literal_eval()代替:
>>> import ast
>>> ast.literal_eval('["a", "b", "c"]')
['a', 'b', 'c']
>>> ast.literal_eval("['a', 'b', 'c']")
['a', 'b', 'c']
>>> ast.literal_eval('["mixed", \'quoting\', """styles"""]')
['mixed', 'quoting', 'styles']
#2
0
I started at this * question when looking to solve this myself.
当我想自己解决这个问题时，我就开始了这个*的问题。
The solution to use ast.literal_eval() did not work for all my cases, as the text also occasionally had boolean constants true/false which are not recognised as Python tokens (which are capitalised.)
使用ast.literal_eval()的解决方案并不适用于我的所有情况，因为文本有时也有boolean常量true/false，它们不能识别为Python标记(大写)。
To solve it for myself, I wrok a custom JSONDecoder which plugs into the standard json Python package.
为了自己解决这个问题，我设计了一个自定义的JSONDecoder，它插入到标准的json Python包中。
pip install git+https://github.com/jpz/tolerantjsondecoder.git
pip安装git + https://github.com/jpz/tolerantjsondecoder.git
Maybe this may be of use to the next person.
也许这对下一个人有用。
Also, to note, after I completed this, I later found the demjson library which appears to be a more complete solution, however I've not evaluated it.
另外，需要注意的是，在完成此操作之后，我后来找到了demjson库，它似乎是一个更完整的解决方案，但是我还没有对它进行评估。
#3
0
Demjson does your work but it is extremely slow and i mean very slow compare to simplejson. I don't recommend it for production environment.
Demjson做了你的工作，但是它非常慢，我的意思是非常慢地比较simplejson。我不推荐它用于生产环境。
ast.literal_eval() and yaml also doesn't work on all json so you need a more stable solution like simplejson.
literal_eval()和yaml也不能处理所有的json，因此需要一个更稳定的解决方案，比如simplejson。
If you tweak simplejson a little bit then it can do your work. I myself have done it and sharing this code.
如果稍微调整一下simplejson，它就可以完成您的工作。我自己做过，也分享过这段代码。
I am telling it in 2 points
我说的是两点。
1) Download simplejson from github and add it to your project. 2) Now simplejson has decoder.py python file. Replace that file code with this code
1)从github上下载simplejson并添加到项目中。2)现在simplejson有解码器。py python文件。用此代码替换该文件代码。
"""Implementation of JSONDecoder
"""
from __future__ import absolute_import
import re
import sys
import struct
from .compat import u, text_type, binary_type, PY3, unichr
from .scanner import make_scanner, JSONDecodeError
def _import_c_scanstring():
try:
from ._speedups import scanstring
return scanstring
except ImportError:
return None
c_scanstring = _import_c_scanstring()
# NOTE (3.1.0): JSONDecodeError may still be imported from this module for
# compatibility, but it was never in the __all__
__all__ = ['JSONDecoder']
FLAGS = re.VERBOSE | re.MULTILINE | re.DOTALL
def _floatconstants():
if sys.version_info < (2, 6):
_BYTES = '7FF80000000000007FF0000000000000'.decode('hex')
nan, inf = struct.unpack('>dd', _BYTES)
else:
nan = float('nan')
inf = float('inf')
return nan, inf, -inf
NaN, PosInf, NegInf = _floatconstants()
_CONSTANTS = {
'-Infinity': NegInf,
'Infinity': PosInf,
'NaN': NaN,
}
STRINGCHUNK = re.compile(r'(.*?)(["\\\x00-\x1f])', FLAGS)
STRINGCHUNKUNQUOTED = re.compile(r'(.*?)([:\\\x00-\x1f])', FLAGS)
STRINGCHUNKSINGLEQUOTED = re.compile(r"(.*?)(['\\\x00-\x1f])", FLAGS)
BACKSLASH = {
'"': u('"'), '\\': u('\u005c'), '/': u('/'),
'b': u('\b'), 'f': u('\f'), 'n': u('\n'), 'r': u('\r'), 't': u('\t'),
}
SINGLE_QUOTE_BACKSLASH = {
"'": u("'"), '\\': u('\u005c'), '/': u('/'),
'b': u('\b'), 'f': u('\f'), 'n': u('\n'), 'r': u('\r'), 't': u('\t'),
}
DEFAULT_ENCODING = "utf-8"
def parse_single_quoted_string(s, end, encoding=None, strict=True):
return py_scanstring(s, end, encoding, strict, SINGLE_QUOTE_BACKSLASH, STRINGCHUNKSINGLEQUOTED.match)
def py_scanstring(s, end, encoding=None, strict=True,
_b=BACKSLASH, _m=STRINGCHUNK.match, _join=u('').join,
_PY3=PY3, _maxunicode=sys.maxunicode):
"""Scan the string s for a JSON string. End is the index of the
character in s after the quote that started the JSON string.
Unescapes all valid JSON string escape sequences and raises ValueError
on attempt to decode an invalid string. If strict is False then literal
control characters are allowed in the string.
Returns a tuple of the decoded string and the index of the character in s
after the end quote."""
if encoding is None:
encoding = DEFAULT_ENCODING
chunks = []
_append = chunks.append
begin = end - 1
while 1:
chunk = _m(s, end)
if chunk is None:
raise JSONDecodeError(
"Unterminated string starting at", s, begin)
end = chunk.end()
content, terminator = chunk.groups()
# Content is contains zero or more unescaped string characters
if content:
if not _PY3 and not isinstance(content, text_type):
content = text_type(content, encoding)
_append(content)
# Terminator is the end of string, a literal control character,
# or a backslash denoting that an escape sequence follows
if not is_not_quote(terminator):
break
elif terminator != '\\':
if strict:
msg = "Invalid control character %r at"
raise JSONDecodeError(msg, s, end)
else:
_append(terminator)
continue
try:
esc = s[end]
except IndexError:
raise JSONDecodeError(
"Unterminated string starting at", s, begin)
# If not a unicode escape sequence, must be in the lookup table
if esc != 'u':
try:
char = _b[esc]
except KeyError:
msg = "Invalid \\X escape sequence %r"
raise JSONDecodeError(msg, s, end)
end += 1
else:
# Unicode escape sequence
msg = "Invalid \\uXXXX escape sequence"
esc = s[end + 1:end + 5]
escX = esc[1:2]
if len(esc) != 4 or escX == 'x' or escX == 'X':
raise JSONDecodeError(msg, s, end - 1)
try:
uni = int(esc, 16)
except ValueError:
raise JSONDecodeError(msg, s, end - 1)
end += 5
# Check for surrogate pair on UCS-4 systems
# Note that this will join high/low surrogate pairs
# but will also pass unpaired surrogates through
if (_maxunicode > 65535 and
uni & 0xfc00 == 0xd800 and
s[end:end + 2] == '\\u'):
esc2 = s[end + 2:end + 6]
escX = esc2[1:2]
if len(esc2) == 4 and not (escX == 'x' or escX == 'X'):
try:
uni2 = int(esc2, 16)
except ValueError:
raise JSONDecodeError(msg, s, end)
if uni2 & 0xfc00 == 0xdc00:
uni = 0x10000 + (((uni - 0xd800) << 10) |
(uni2 - 0xdc00))
end += 6
char = unichr(uni)
# Append the unescaped character
_append(char)
return _join(chunks), end
# Use speedup if available
scanstring = c_scanstring or py_scanstring
WHITESPACE = re.compile(r'[ \t\n\r]*', FLAGS)
WHITESPACE_STR = ' \t\n\r'
UNQUOTEDDICT = {'/': '/', '\\': '\\', ';': ';', '#': '#',
'=': '=', '{': '{', '}': '}', '[': '[', ']': ']',
':': ':', ',': ',', ' ': ' ', '\t': '\t',
'\f': '\f', '\r': '\r', '\n': '\n'}
QUOTE_DICT = {'"': '"', "'": "'"}
def is_literal(char):
return not UNQUOTEDDICT.get(char, None)
def is_not_quote(char):
return not QUOTE_DICT.get(char, None)
def nexUnquotedKey(s, end):
chunk = STRINGCHUNKUNQUOTED.match(s,end)
for i in range(chunk.end()):
index = i+end
if not is_literal(s[index]):
return s[end:index], index
def JSONObject(state, encoding, strict, scan_once, object_hook,
object_pairs_hook, memo=None,
_w=WHITESPACE.match, _ws=WHITESPACE_STR):
(s, end) = state
# Backwards compatibility
if memo is None:
memo = {}
memo_get = memo.setdefault
pairs = []
# Use a slice to prevent IndexError from being raised, the following
# check will raise a more specific ValueError if the string is empty
nextchar = s[end:end + 1]
# Normally we expect nextchar == '"'
literal_check = False
if is_not_quote(nextchar):
if nextchar in _ws:
end = _w(s, end).end()
nextchar = s[end:end + 1]
# Trivial empty object
literal_check = is_literal(nextchar)
if nextchar == '}':
if object_pairs_hook is not None:
result = object_pairs_hook(pairs)
return result, end + 1
pairs = {}
if object_hook is not None:
pairs = object_hook(pairs)
return pairs, end + 1
elif nextchar != '"' and not literal_check:
raise JSONDecodeError(
"Expecting property name enclosed in double quotes",
s, end)
if not literal_check:
end += 1
while True:
if literal_check:
key, end = nexUnquotedKey(s,end)
else:
if nextchar == "'":
key, end = scanstring(s, end, encoding, strict, SINGLE_QUOTE_BACKSLASH, STRINGCHUNKSINGLEQUOTED.match)
else:
key, end = scanstring(s, end, encoding, strict)
key = memo_get(key, key)
# To skip some function call overhead we optimize the fast paths where
# the JSON key separator is ": " or just ":".
if s[end:end + 1] != ':':
end = _w(s, end).end()
if s[end:end + 1] != ':':
raise JSONDecodeError("Expecting ':' delimiter", s, end)
end += 1
try:
if s[end] in _ws:
end += 1
if s[end] in _ws:
end = _w(s, end + 1).end()
except IndexError:
pass
value, end = scan_once(s, end)
pairs.append((key, value))
try:
nextchar = s[end]
if nextchar in _ws:
end = _w(s, end + 1).end()
nextchar = s[end]
except IndexError:
nextchar = ''
end += 1
if nextchar == '}':
break
elif nextchar != ',':
raise JSONDecodeError("Expecting ',' delimiter or '}'", s, end - 1)
try:
nextchar = s[end]
if nextchar in _ws:
end += 1
nextchar = s[end]
if nextchar in _ws:
end = _w(s, end + 1).end()
nextchar = s[end]
except IndexError:
nextchar = ''
if not literal_check:
end += 1
if is_not_quote(nextchar):
raise JSONDecodeError(
"Expecting property name enclosed in double quotes",
s, end - 1)
if object_pairs_hook is not None:
result = object_pairs_hook(pairs)
return result, end
pairs = dict(pairs)
if object_hook is not None:
pairs = object_hook(pairs)
return pairs, end
def JSONArray(state, scan_once, _w=WHITESPACE.match, _ws=WHITESPACE_STR):
(s, end) = state
values = []
nextchar = s[end:end + 1]
if nextchar in _ws:
end = _w(s, end + 1).end()
nextchar = s[end:end + 1]
# Look-ahead for trivial empty array
if nextchar == ']':
return values, end + 1
elif nextchar == '':
raise JSONDecodeError("Expecting value or ']'", s, end)
_append = values.append
while True:
value, end = scan_once(s, end)
_append(value)
nextchar = s[end:end + 1]
if nextchar in _ws:
end = _w(s, end + 1).end()
nextchar = s[end:end + 1]
end += 1
if nextchar == ']':
break
elif nextchar != ',':
raise JSONDecodeError("Expecting ',' delimiter or ']'", s, end - 1)
try:
if s[end] in _ws:
end += 1
if s[end] in _ws:
end = _w(s, end + 1).end()
except IndexError:
pass
return values, end
class JSONDecoder(object):
"""Simple JSON <http://json.org> decoder
Performs the following translations in decoding by default:
+---------------+-------------------+
| JSON | Python |
+===============+===================+
| object | dict |
+---------------+-------------------+
| array | list |
+---------------+-------------------+
| string | str, unicode |
+---------------+-------------------+
| number (int) | int, long |
+---------------+-------------------+
| number (real) | float |
+---------------+-------------------+
| true | True |
+---------------+-------------------+
| false | False |
+---------------+-------------------+
| null | None |
+---------------+-------------------+
It also understands ``NaN``, ``Infinity``, and ``-Infinity`` as
their corresponding ``float`` values, which is outside the JSON spec.
"""
def __init__(self, encoding=None, object_hook=None, parse_float=None,
parse_int=None, parse_constant=None, strict=True,
object_pairs_hook=None):
"""
*encoding* determines the encoding used to interpret any
:class:`str` objects decoded by this instance (``'utf-8'`` by
default). It has no effect when decoding :class:`unicode` objects.
Note that currently only encodings that are a superset of ASCII work,
strings of other encodings should be passed in as :class:`unicode`.
*object_hook*, if specified, will be called with the result of every
JSON object decoded and its return value will be used in place of the
given :class:`dict`. This can be used to provide custom
deserializations (e.g. to support JSON-RPC class hinting).
*object_pairs_hook* is an optional function that will be called with
the result of any object literal decode with an ordered list of pairs.
The return value of *object_pairs_hook* will be used instead of the
:class:`dict`. This feature can be used to implement custom decoders
that rely on the order that the key and value pairs are decoded (for
example, :func:`collections.OrderedDict` will remember the order of
insertion). If *object_hook* is also defined, the *object_pairs_hook*
takes priority.
*parse_float*, if specified, will be called with the string of every
JSON float to be decoded. By default, this is equivalent to
``float(num_str)``. This can be used to use another datatype or parser
for JSON floats (e.g. :class:`decimal.Decimal`).
*parse_int*, if specified, will be called with the string of every
JSON int to be decoded. By default, this is equivalent to
``int(num_str)``. This can be used to use another datatype or parser
for JSON integers (e.g. :class:`float`).
*parse_constant*, if specified, will be called with one of the
following strings: ``'-Infinity'``, ``'Infinity'``, ``'NaN'``. This
can be used to raise an exception if invalid JSON numbers are
encountered.
*strict* controls the parser's behavior when it encounters an
invalid control character in a string. The default setting of
``True`` means that unescaped control characters are parse errors, if
``False`` then control characters will be allowed in strings.
"""
if encoding is None:
encoding = DEFAULT_ENCODING
self.encoding = encoding
self.object_hook = object_hook
self.object_pairs_hook = object_pairs_hook
self.parse_float = parse_float or float
self.parse_int = parse_int or int
self.parse_constant = parse_constant or _CONSTANTS.__getitem__
self.strict = strict
self.parse_object = JSONObject
self.parse_array = JSONArray
self.parse_string = scanstring
self.parse_single_quoted_string = parse_single_quoted_string
self.memo = {}
self.scan_once = make_scanner(self)
def decode(self, s, _w=WHITESPACE.match, _PY3=PY3):
"""Return the Python representation of ``s`` (a ``str`` or ``unicode``
instance containing a JSON document)
"""
if _PY3 and isinstance(s, binary_type):
s = s.decode(self.encoding)
obj, end = self.raw_decode(s)
end = _w(s, end).end()
if end != len(s):
raise JSONDecodeError("Extra data", s, end, len(s))
return obj
def raw_decode(self, s, idx=0, _w=WHITESPACE.match, _PY3=PY3):
"""Decode a JSON document from ``s`` (a ``str`` or ``unicode``
beginning with a JSON document) and return a 2-tuple of the Python
representation and the index in ``s`` where the document ended.
Optionally, ``idx`` can be used to specify an offset in ``s`` where
the JSON document begins.
This can be used to decode a JSON document from a string that may
have extraneous data at the end.
"""
if idx < 0:
# Ensure that raw_decode bails on negative indexes, the regex
# would otherwise mask this behavior. #98
raise JSONDecodeError('Expecting value', s, idx)
if _PY3 and not isinstance(s, text_type):
raise TypeError("Input string must be text, not bytes")
# strip UTF-8 bom
if len(s) > idx:
ord0 = ord(s[idx])
if ord0 == 0xfeff:
idx += 1
elif ord0 == 0xef and s[idx:idx + 3] == '\xef\xbb\xbf':
idx += 3
return self.scan_once(s, idx=_w(s, idx).end())
2) simplejson has scanner.py python file . Replace that file code with this code
2)simplejson扫描仪。py python文件。用此代码替换该文件代码。
"""JSON token scanner
"""
import re
from .errors import JSONDecodeError
def _import_c_make_scanner():
try:
from ._speedups import make_scanner
return make_scanner
except ImportError:
return None
c_make_scanner = _import_c_make_scanner()
__all__ = ['make_scanner', 'JSONDecodeError']
NUMBER_RE = re.compile(
r'(-?(?:0|[1-9]\d*))(\.\d+)?([eE][-+]?\d+)?',
(re.VERBOSE | re.MULTILINE | re.DOTALL))
def py_make_scanner(context):
parse_object = context.parse_object
parse_array = context.parse_array
parse_string = context.parse_string
parse_single_quoted_string = context.parse_single_quoted_string
match_number = NUMBER_RE.match
encoding = context.encoding
strict = context.strict
parse_float = context.parse_float
parse_int = context.parse_int
parse_constant = context.parse_constant
object_hook = context.object_hook
object_pairs_hook = context.object_pairs_hook
memo = context.memo
def _scan_once(string, idx):
errmsg = 'Expecting value'
try:
nextchar = string[idx]
except IndexError:
raise JSONDecodeError(errmsg, string, idx)
if nextchar == '"':
return parse_string(string, idx + 1, encoding, strict)
elif nextchar == "'":
return parse_single_quoted_string(string, idx + 1, encoding, strict)
elif nextchar == '{':
return parse_object((string, idx + 1), encoding, strict,
_scan_once, object_hook, object_pairs_hook, memo)
elif nextchar == '[':
return parse_array((string, idx + 1), _scan_once)
elif nextchar == 'n' and string[idx:idx + 4] == 'null':
return None, idx + 4
elif nextchar == 't' and string[idx:idx + 4] == 'true':
return True, idx + 4
elif nextchar == 'f' and string[idx:idx + 5] == 'false':
return False, idx + 5
m = match_number(string, idx)
if m is not None:
integer, frac, exp = m.groups()
if frac or exp:
res = parse_float(integer + (frac or '') + (exp or ''))
else:
res = parse_int(integer)
return res, m.end()
elif nextchar == 'N' and string[idx:idx + 3] == 'NaN':
return parse_constant('NaN'), idx + 3
elif nextchar == 'I' and string[idx:idx + 8] == 'Infinity':
return parse_constant('Infinity'), idx + 8
elif nextchar == '-' and string[idx:idx + 9] == '-Infinity':
return parse_constant('-Infinity'), idx + 9
else:
raise JSONDecodeError(errmsg, string, idx)
def scan_once(string, idx):
if idx < 0:
# Ensure the same behavior as the C speedup, otherwise
# this would work for *some* negative string indices due
# to the behavior of __getitem__ for strings. #98
raise JSONDecodeError('Expecting value', string, idx)
try:
return _scan_once(string, idx)
finally:
memo.clear()
return scan_once
make_scanner = c_make_scanner or py_make_scanner
Now you are all set. Simplejson is the fastest and stable Library i have used.
Simplejson是我使用过的最快、最稳定的库。
I have changed few lines of code in simplejson and now this awesome library works for
我在simplejson中改变了几行代码，现在这个很棒的库工作了。
- Unquoted json keys and Single Quoted json strings and keys
- 未引用的json密钥和单引号的json字符串和键。
I have changed python code only. So if you use C extension for speed up boost then this code will not work.
我只修改了python代码。所以如果你使用C扩展来提高速度，那么这段代码就不起作用了。
#4
0
Demjson does your work but it is extremely slow and i mean very slow compare to simplejson. I don't recommend it for production environment.
Demjson做了你的工作，但是它非常慢，我的意思是非常慢地比较simplejson。我不推荐它用于生产环境。
ast.literal_eval() and yaml also doesn't work on all json so you need a more stable solution like simplejson.
literal_eval()和yaml也不能处理所有的json，因此需要一个更稳定的解决方案，比如simplejson。
If you tweak simplejson a little bit then it can do your work. I myself have done it and sharing this code.
如果稍微调整一下simplejson，它就可以完成您的工作。我自己做过，也分享过这段代码。
I am telling it in 2 points
我说的是两点。
1) Download simplejson from github and add it to your project. 2) Now simplejson has decoder.py python file. Replace that file code with this code
1)从github上下载simplejson并添加到项目中。2)现在simplejson有解码器。py python文件。用此代码替换该文件代码。
"""Implementation of JSONDecoder
"""
from __future__ import absolute_import
import re
import sys
import struct
from .compat import u, text_type, binary_type, PY3, unichr
from .scanner import make_scanner, JSONDecodeError
def _import_c_scanstring():
try:
from ._speedups import scanstring
return scanstring
except ImportError:
return None
c_scanstring = _import_c_scanstring()
# NOTE (3.1.0): JSONDecodeError may still be imported from this module for
# compatibility, but it was never in the __all__
__all__ = ['JSONDecoder']
FLAGS = re.VERBOSE | re.MULTILINE | re.DOTALL
def _floatconstants():
if sys.version_info < (2, 6):
_BYTES = '7FF80000000000007FF0000000000000'.decode('hex')
nan, inf = struct.unpack('>dd', _BYTES)
else:
nan = float('nan')
inf = float('inf')
return nan, inf, -inf
NaN, PosInf, NegInf = _floatconstants()
_CONSTANTS = {
'-Infinity': NegInf,
'Infinity': PosInf,
'NaN': NaN,
}
STRINGCHUNK = re.compile(r'(.*?)(["\\\x00-\x1f])', FLAGS)
# Changed Code Here. Added These Two Lines
STRINGCHUNKUNQUOTED = re.compile(r'(.*?)([:\\\x00-\x1f])', FLAGS)
STRINGCHUNKSINGLEQUOTED = re.compile(r"(.*?)(['\\\x00-\x1f])", FLAGS)
BACKSLASH = {
'"': u('"'), '\\': u('\u005c'), '/': u('/'),
'b': u('\b'), 'f': u('\f'), 'n': u('\n'), 'r': u('\r'), 't': u('\t'),
}
# Changed Code Here.
SINGLE_QUOTE_BACKSLASH = {
"'": u("'"), '\\': u('\u005c'), '/': u('/'),
'b': u('\b'), 'f': u('\f'), 'n': u('\n'), 'r': u('\r'), 't': u('\t'),
}
DEFAULT_ENCODING = "utf-8"
# Changed Code Here.
def parse_single_quoted_string(s, end, encoding=None, strict=True):
return py_scanstring(s, end, encoding, strict, SINGLE_QUOTE_BACKSLASH, STRINGCHUNKSINGLEQUOTED.match)
def py_scanstring(s, end, encoding=None, strict=True,
_b=BACKSLASH, _m=STRINGCHUNK.match, _join=u('').join,
_PY3=PY3, _maxunicode=sys.maxunicode):
"""Scan the string s for a JSON string. End is the index of the
character in s after the quote that started the JSON string.
Unescapes all valid JSON string escape sequences and raises ValueError
on attempt to decode an invalid string. If strict is False then literal
control characters are allowed in the string.
Returns a tuple of the decoded string and the index of the character in s
after the end quote."""
if encoding is None:
encoding = DEFAULT_ENCODING
chunks = []
_append = chunks.append
begin = end - 1
while 1:
chunk = _m(s, end)
if chunk is None:
raise JSONDecodeError(
"Unterminated string starting at", s, begin)
end = chunk.end()
content, terminator = chunk.groups()
# Content is contains zero or more unescaped string characters
if content:
if not _PY3 and not isinstance(content, text_type):
content = text_type(content, encoding)
_append(content)
# Terminator is the end of string, a literal control character,
# or a backslash denoting that an escape sequence follows
# Changed Code Here.
if not is_not_quote(terminator):
break
elif terminator != '\\':
if strict:
msg = "Invalid control character %r at"
raise JSONDecodeError(msg, s, end)
else:
_append(terminator)
continue
try:
esc = s[end]
except IndexError:
raise JSONDecodeError(
"Unterminated string starting at", s, begin)
# If not a unicode escape sequence, must be in the lookup table
if esc != 'u':
try:
char = _b[esc]
except KeyError:
msg = "Invalid \\X escape sequence %r"
raise JSONDecodeError(msg, s, end)
end += 1
else:
# Unicode escape sequence
msg = "Invalid \\uXXXX escape sequence"
esc = s[end + 1:end + 5]
escX = esc[1:2]
if len(esc) != 4 or escX == 'x' or escX == 'X':
raise JSONDecodeError(msg, s, end - 1)
try:
uni = int(esc, 16)
except ValueError:
raise JSONDecodeError(msg, s, end - 1)
end += 5
# Check for surrogate pair on UCS-4 systems
# Note that this will join high/low surrogate pairs
# but will also pass unpaired surrogates through
if (_maxunicode > 65535 and
uni & 0xfc00 == 0xd800 and
s[end:end + 2] == '\\u'):
esc2 = s[end + 2:end + 6]
escX = esc2[1:2]
if len(esc2) == 4 and not (escX == 'x' or escX == 'X'):
try:
uni2 = int(esc2, 16)
except ValueError:
raise JSONDecodeError(msg, s, end)
if uni2 & 0xfc00 == 0xdc00:
uni = 0x10000 + (((uni - 0xd800) << 10) |
(uni2 - 0xdc00))
end += 6
char = unichr(uni)
# Append the unescaped character
_append(char)
return _join(chunks), end
# Use speedup if available
scanstring = c_scanstring or py_scanstring
WHITESPACE = re.compile(r'[ \t\n\r]*', FLAGS)
WHITESPACE_STR = ' \t\n\r'
# Changed Code Here.
UNQUOTEDDICT = {'/': '/', '\\': '\\', ';': ';', '#': '#',
'=': '=', '{': '{', '}': '}', '[': '[', ']': ']',
':': ':', ',': ',', ' ': ' ', '\t': '\t',
'\f': '\f', '\r': '\r', '\n': '\n'}
# Changed Code Here.
QUOTE_DICT = {'"': '"', "'": "'"}
# Changed Code Here.
def is_literal(char):
return not UNQUOTEDDICT.get(char, None)
# Changed Code Here.
def is_not_quote(char):
return not QUOTE_DICT.get(char, None)
# Changed Code Here.
def nexUnquotedKey(s, end):
chunk = STRINGCHUNKUNQUOTED.match(s,end)
for i in range(chunk.end()):
index = i+end
if not is_literal(s[index]):
return s[end:index], index
def JSONObject(state, encoding, strict, scan_once, object_hook,
object_pairs_hook, memo=None,
_w=WHITESPACE.match, _ws=WHITESPACE_STR):
(s, end) = state
# Backwards compatibility
if memo is None:
memo = {}
memo_get = memo.setdefault
pairs = []
# Use a slice to prevent IndexError from being raised, the following
# check will raise a more specific ValueError if the string is empty
nextchar = s[end:end + 1]
# Normally we expect nextchar == '"'
literal_check = False
# Changed Code Here.
if is_not_quote(nextchar):
if nextchar in _ws:
end = _w(s, end).end()
nextchar = s[end:end + 1]
# Trivial empty object
literal_check = is_literal(nextchar)
if nextchar == '}':
if object_pairs_hook is not None:
result = object_pairs_hook(pairs)
return result, end + 1
pairs = {}
if object_hook is not None:
pairs = object_hook(pairs)
return pairs, end + 1
elif nextchar != '"' and not literal_check: # Changed Code Here.
raise JSONDecodeError(
"Expecting property name enclosed in double quotes",
s, end)
# Changed Code Here.
if not literal_check:
end += 1
while True:
if literal_check:
key, end = nexUnquotedKey(s,end)
else:
# Changed Code Here.
if nextchar == "'":
key, end = scanstring(s, end, encoding, strict, SINGLE_QUOTE_BACKSLASH, STRINGCHUNKSINGLEQUOTED.match)
else:
key, end = scanstring(s, end, encoding, strict)
key = memo_get(key, key)
# To skip some function call overhead we optimize the fast paths where
# the JSON key separator is ": " or just ":".
if s[end:end + 1] != ':':
end = _w(s, end).end()
if s[end:end + 1] != ':':
raise JSONDecodeError("Expecting ':' delimiter", s, end)
end += 1
try:
if s[end] in _ws:
end += 1
if s[end] in _ws:
end = _w(s, end + 1).end()
except IndexError:
pass
value, end = scan_once(s, end)
pairs.append((key, value))
try:
nextchar = s[end]
if nextchar in _ws:
end = _w(s, end + 1).end()
nextchar = s[end]
except IndexError:
nextchar = ''
end += 1
if nextchar == '}':
break
elif nextchar != ',':
raise JSONDecodeError("Expecting ',' delimiter or '}'", s, end - 1)
try:
nextchar = s[end]
if nextchar in _ws:
end += 1
nextchar = s[end]
if nextchar in _ws:
end = _w(s, end + 1).end()
nextchar = s[end]
except IndexError:
nextchar = ''
# Changed Code Here.
if not literal_check:
end += 1
# Changed Code Here.
if is_not_quote(nextchar):
raise JSONDecodeError(
"Expecting property name enclosed in double quotes",
s, end - 1)
if object_pairs_hook is not None:
result = object_pairs_hook(pairs)
return result, end
pairs = dict(pairs)
if object_hook is not None:
pairs = object_hook(pairs)
return pairs, end
def JSONArray(state, scan_once, _w=WHITESPACE.match, _ws=WHITESPACE_STR):
(s, end) = state
values = []
nextchar = s[end:end + 1]
if nextchar in _ws:
end = _w(s, end + 1).end()
nextchar = s[end:end + 1]
# Look-ahead for trivial empty array
if nextchar == ']':
return values, end + 1
elif nextchar == '':
raise JSONDecodeError("Expecting value or ']'", s, end)
_append = values.append
while True:
value, end = scan_once(s, end)
_append(value)
nextchar = s[end:end + 1]
if nextchar in _ws:
end = _w(s, end + 1).end()
nextchar = s[end:end + 1]
end += 1
if nextchar == ']':
break
elif nextchar != ',':
raise JSONDecodeError("Expecting ',' delimiter or ']'", s, end - 1)
try:
if s[end] in _ws:
end += 1
if s[end] in _ws:
end = _w(s, end + 1).end()
except IndexError:
pass
return values, end
class JSONDecoder(object):
"""Simple JSON <http://json.org> decoder
Performs the following translations in decoding by default:
+---------------+-------------------+
| JSON | Python |
+===============+===================+
| object | dict |
+---------------+-------------------+
| array | list |
+---------------+-------------------+
| string | str, unicode |
+---------------+-------------------+
| number (int) | int, long |
+---------------+-------------------+
| number (real) | float |
+---------------+-------------------+
| true | True |
+---------------+-------------------+
| false | False |
+---------------+-------------------+
| null | None |
+---------------+-------------------+
It also understands ``NaN``, ``Infinity``, and ``-Infinity`` as
their corresponding ``float`` values, which is outside the JSON spec.
"""
def __init__(self, encoding=None, object_hook=None, parse_float=None,
parse_int=None, parse_constant=None, strict=True,
object_pairs_hook=None):
"""
*encoding* determines the encoding used to interpret any
:class:`str` objects decoded by this instance (``'utf-8'`` by
default). It has no effect when decoding :class:`unicode` objects.
Note that currently only encodings that are a superset of ASCII work,
strings of other encodings should be passed in as :class:`unicode`.
*object_hook*, if specified, will be called with the result of every
JSON object decoded and its return value will be used in place of the
given :class:`dict`. This can be used to provide custom
deserializations (e.g. to support JSON-RPC class hinting).
*object_pairs_hook* is an optional function that will be called with
the result of any object literal decode with an ordered list of pairs.
The return value of *object_pairs_hook* will be used instead of the
:class:`dict`. This feature can be used to implement custom decoders
that rely on the order that the key and value pairs are decoded (for
example, :func:`collections.OrderedDict` will remember the order of
insertion). If *object_hook* is also defined, the *object_pairs_hook*
takes priority.
*parse_float*, if specified, will be called with the string of every
JSON float to be decoded. By default, this is equivalent to
``float(num_str)``. This can be used to use another datatype or parser
for JSON floats (e.g. :class:`decimal.Decimal`).
*parse_int*, if specified, will be called with the string of every
JSON int to be decoded. By default, this is equivalent to
``int(num_str)``. This can be used to use another datatype or parser
for JSON integers (e.g. :class:`float`).
*parse_constant*, if specified, will be called with one of the
following strings: ``'-Infinity'``, ``'Infinity'``, ``'NaN'``. This
can be used to raise an exception if invalid JSON numbers are
encountered.
*strict* controls the parser's behavior when it encounters an
invalid control character in a string. The default setting of
``True`` means that unescaped control characters are parse errors, if
``False`` then control characters will be allowed in strings.
"""
if encoding is None:
encoding = DEFAULT_ENCODING
self.encoding = encoding
self.object_hook = object_hook
self.object_pairs_hook = object_pairs_hook
self.parse_float = parse_float or float
self.parse_int = parse_int or int
self.parse_constant = parse_constant or _CONSTANTS.__getitem__
self.strict = strict
self.parse_object = JSONObject
self.parse_array = JSONArray
self.parse_string = scanstring
self.parse_single_quoted_string = parse_single_quoted_string # Changed Code Here.
self.memo = {}
self.scan_once = make_scanner(self)
def decode(self, s, _w=WHITESPACE.match, _PY3=PY3):
"""Return the Python representation of ``s`` (a ``str`` or ``unicode``
instance containing a JSON document)
"""
if _PY3 and isinstance(s, binary_type):
s = s.decode(self.encoding)
obj, end = self.raw_decode(s)
end = _w(s, end).end()
if end != len(s):
raise JSONDecodeError("Extra data", s, end, len(s))
return obj
def raw_decode(self, s, idx=0, _w=WHITESPACE.match, _PY3=PY3):
"""Decode a JSON document from ``s`` (a ``str`` or ``unicode``
beginning with a JSON document) and return a 2-tuple of the Python
representation and the index in ``s`` where the document ended.
Optionally, ``idx`` can be used to specify an offset in ``s`` where
the JSON document begins.
This can be used to decode a JSON document from a string that may
have extraneous data at the end.
"""
if idx < 0:
# Ensure that raw_decode bails on negative indexes, the regex
# would otherwise mask this behavior. #98
raise JSONDecodeError('Expecting value', s, idx)
if _PY3 and not isinstance(s, text_type):
raise TypeError("Input string must be text, not bytes")
# strip UTF-8 bom
if len(s) > idx:
ord0 = ord(s[idx])
if ord0 == 0xfeff:
idx += 1
elif ord0 == 0xef and s[idx:idx + 3] == '\xef\xbb\xbf':
idx += 3
return self.scan_once(s, idx=_w(s, idx).end())
2) simplejson has scanner.py python file . Replace that file code with this code
2)simplejson扫描仪。py python文件。用此代码替换该文件代码。
"""JSON token scanner
"""
import re
from .errors import JSONDecodeError
def _import_c_make_scanner():
try:
from ._speedups import make_scanner
return make_scanner
except ImportError:
return None
c_make_scanner = _import_c_make_scanner()
__all__ = ['make_scanner', 'JSONDecodeError']
NUMBER_RE = re.compile(
r'(-?(?:0|[1-9]\d*))(\.\d+)?([eE][-+]?\d+)?',
(re.VERBOSE | re.MULTILINE | re.DOTALL))
def py_make_scanner(context):
parse_object = context.parse_object
parse_array = context.parse_array
parse_string = context.parse_string
parse_single_quoted_string = context.parse_single_quoted_string # Changed Code Here.
match_number = NUMBER_RE.match
encoding = context.encoding
strict = context.strict
parse_float = context.parse_float
parse_int = context.parse_int
parse_constant = context.parse_constant
object_hook = context.object_hook
object_pairs_hook = context.object_pairs_hook
memo = context.memo
def _scan_once(string, idx):
errmsg = 'Expecting value'
try:
nextchar = string[idx]
except IndexError:
raise JSONDecodeError(errmsg, string, idx)
if nextchar == '"':
return parse_string(string, idx + 1, encoding, strict)
elif nextchar == "'":
return parse_single_quoted_string(string, idx + 1, encoding, strict) # Changed Code Here.
elif nextchar == '{':
return parse_object((string, idx + 1), encoding, strict,
_scan_once, object_hook, object_pairs_hook, memo)
elif nextchar == '[':
return parse_array((string, idx + 1), _scan_once)
elif nextchar == 'n' and string[idx:idx + 4] == 'null':
return None, idx + 4
elif nextchar == 't' and string[idx:idx + 4] == 'true':
return True, idx + 4
elif nextchar == 'f' and string[idx:idx + 5] == 'false':
return False, idx + 5
m = match_number(string, idx)
if m is not None:
integer, frac, exp = m.groups()
if frac or exp:
res = parse_float(integer + (frac or '') + (exp or ''))
else:
res = parse_int(integer)
return res, m.end()
elif nextchar == 'N' and string[idx:idx + 3] == 'NaN':
return parse_constant('NaN'), idx + 3
elif nextchar == 'I' and string[idx:idx + 8] == 'Infinity':
return parse_constant('Infinity'), idx + 8
elif nextchar == '-' and string[idx:idx + 9] == '-Infinity':
return parse_constant('-Infinity'), idx + 9
else:
raise JSONDecodeError(errmsg, string, idx)
def scan_once(string, idx):
if idx < 0:
# Ensure the same behavior as the C speedup, otherwise
# this would work for *some* negative string indices due
# to the behavior of __getitem__ for strings. #98
raise JSONDecodeError('Expecting value', string, idx)
try:
return _scan_once(string, idx)
finally:
memo.clear()
return scan_once
make_scanner = c_make_scanner or py_make_scanner
Now you are all set. Simplejson is the fastest and stable Library i have used.
Simplejson是我使用过的最快、最稳定的库。
I have changed few lines of code in simplejson and now this awesome library works for
我在simplejson中改变了几行代码，现在这个很棒的库工作了。
- Unquoted json keys and Single Quoted json strings and keys
- 未引用的json密钥和单引号的json字符串和键。
I have changed python code only. So if you use C extension for speed up boost then this code will not work.
我只修改了python代码。所以如果你使用C扩展来提高速度，那么这段代码就不起作用了。
Wherever I made changes I have added Comment # Changed Code Here
无论我做什么更改，我都在这里添加了注释# Changed代码
I mistakenly answered previously as guest user and now I can not login to edit that answer so i posted in new thread.
我之前错误地以访客用户的身份回答，现在我无法登录来编辑那个答案，所以我在new thread上发帖。
#1
26
Use the proper tool for the job, you are not parsing JSON but Python, so use ast.literal_eval() instead:
使用合适的工具完成任务，您不是在解析JSON，而是在解析Python，所以使用ast.literal_eval()代替:
>>> import ast
>>> ast.literal_eval('["a", "b", "c"]')
['a', 'b', 'c']
>>> ast.literal_eval("['a', 'b', 'c']")
['a', 'b', 'c']
>>> ast.literal_eval('["mixed", \'quoting\', """styles"""]')
['mixed', 'quoting', 'styles']
#2
0
I started at this * question when looking to solve this myself.
当我想自己解决这个问题时，我就开始了这个*的问题。
The solution to use ast.literal_eval() did not work for all my cases, as the text also occasionally had boolean constants true/false which are not recognised as Python tokens (which are capitalised.)
使用ast.literal_eval()的解决方案并不适用于我的所有情况，因为文本有时也有boolean常量true/false，它们不能识别为Python标记(大写)。
To solve it for myself, I wrok a custom JSONDecoder which plugs into the standard json Python package.
为了自己解决这个问题，我设计了一个自定义的JSONDecoder，它插入到标准的json Python包中。
pip install git+https://github.com/jpz/tolerantjsondecoder.git
pip安装git + https://github.com/jpz/tolerantjsondecoder.git
Maybe this may be of use to the next person.
也许这对下一个人有用。
Also, to note, after I completed this, I later found the demjson library which appears to be a more complete solution, however I've not evaluated it.
另外，需要注意的是，在完成此操作之后，我后来找到了demjson库，它似乎是一个更完整的解决方案，但是我还没有对它进行评估。
#3
0
Demjson does your work but it is extremely slow and i mean very slow compare to simplejson. I don't recommend it for production environment.
Demjson做了你的工作，但是它非常慢，我的意思是非常慢地比较simplejson。我不推荐它用于生产环境。
ast.literal_eval() and yaml also doesn't work on all json so you need a more stable solution like simplejson.
literal_eval()和yaml也不能处理所有的json，因此需要一个更稳定的解决方案，比如simplejson。
If you tweak simplejson a little bit then it can do your work. I myself have done it and sharing this code.
如果稍微调整一下simplejson，它就可以完成您的工作。我自己做过，也分享过这段代码。
I am telling it in 2 points
我说的是两点。
1) Download simplejson from github and add it to your project. 2) Now simplejson has decoder.py python file. Replace that file code with this code
1)从github上下载simplejson并添加到项目中。2)现在simplejson有解码器。py python文件。用此代码替换该文件代码。
"""Implementation of JSONDecoder
"""
from __future__ import absolute_import
import re
import sys
import struct
from .compat import u, text_type, binary_type, PY3, unichr
from .scanner import make_scanner, JSONDecodeError
def _import_c_scanstring():
try:
from ._speedups import scanstring
return scanstring
except ImportError:
return None
c_scanstring = _import_c_scanstring()
# NOTE (3.1.0): JSONDecodeError may still be imported from this module for
# compatibility, but it was never in the __all__
__all__ = ['JSONDecoder']
FLAGS = re.VERBOSE | re.MULTILINE | re.DOTALL
def _floatconstants():
if sys.version_info < (2, 6):
_BYTES = '7FF80000000000007FF0000000000000'.decode('hex')
nan, inf = struct.unpack('>dd', _BYTES)
else:
nan = float('nan')
inf = float('inf')
return nan, inf, -inf
NaN, PosInf, NegInf = _floatconstants()
_CONSTANTS = {
'-Infinity': NegInf,
'Infinity': PosInf,
'NaN': NaN,
}
STRINGCHUNK = re.compile(r'(.*?)(["\\\x00-\x1f])', FLAGS)
STRINGCHUNKUNQUOTED = re.compile(r'(.*?)([:\\\x00-\x1f])', FLAGS)
STRINGCHUNKSINGLEQUOTED = re.compile(r"(.*?)(['\\\x00-\x1f])", FLAGS)
BACKSLASH = {
'"': u('"'), '\\': u('\u005c'), '/': u('/'),
'b': u('\b'), 'f': u('\f'), 'n': u('\n'), 'r': u('\r'), 't': u('\t'),
}
SINGLE_QUOTE_BACKSLASH = {
"'": u("'"), '\\': u('\u005c'), '/': u('/'),
'b': u('\b'), 'f': u('\f'), 'n': u('\n'), 'r': u('\r'), 't': u('\t'),
}
DEFAULT_ENCODING = "utf-8"
def parse_single_quoted_string(s, end, encoding=None, strict=True):
return py_scanstring(s, end, encoding, strict, SINGLE_QUOTE_BACKSLASH, STRINGCHUNKSINGLEQUOTED.match)
def py_scanstring(s, end, encoding=None, strict=True,
_b=BACKSLASH, _m=STRINGCHUNK.match, _join=u('').join,
_PY3=PY3, _maxunicode=sys.maxunicode):
"""Scan the string s for a JSON string. End is the index of the
character in s after the quote that started the JSON string.
Unescapes all valid JSON string escape sequences and raises ValueError
on attempt to decode an invalid string. If strict is False then literal
control characters are allowed in the string.
Returns a tuple of the decoded string and the index of the character in s
after the end quote."""
if encoding is None:
encoding = DEFAULT_ENCODING
chunks = []
_append = chunks.append
begin = end - 1
while 1:
chunk = _m(s, end)
if chunk is None:
raise JSONDecodeError(
"Unterminated string starting at", s, begin)
end = chunk.end()
content, terminator = chunk.groups()
# Content is contains zero or more unescaped string characters
if content:
if not _PY3 and not isinstance(content, text_type):
content = text_type(content, encoding)
_append(content)
# Terminator is the end of string, a literal control character,
# or a backslash denoting that an escape sequence follows
if not is_not_quote(terminator):
break
elif terminator != '\\':
if strict:
msg = "Invalid control character %r at"
raise JSONDecodeError(msg, s, end)
else:
_append(terminator)
continue
try:
esc = s[end]
except IndexError:
raise JSONDecodeError(
"Unterminated string starting at", s, begin)
# If not a unicode escape sequence, must be in the lookup table
if esc != 'u':
try:
char = _b[esc]
except KeyError:
msg = "Invalid \\X escape sequence %r"
raise JSONDecodeError(msg, s, end)
end += 1
else:
# Unicode escape sequence
msg = "Invalid \\uXXXX escape sequence"
esc = s[end + 1:end + 5]
escX = esc[1:2]
if len(esc) != 4 or escX == 'x' or escX == 'X':
raise JSONDecodeError(msg, s, end - 1)
try:
uni = int(esc, 16)
except ValueError:
raise JSONDecodeError(msg, s, end - 1)
end += 5
# Check for surrogate pair on UCS-4 systems
# Note that this will join high/low surrogate pairs
# but will also pass unpaired surrogates through
if (_maxunicode > 65535 and
uni & 0xfc00 == 0xd800 and
s[end:end + 2] == '\\u'):
esc2 = s[end + 2:end + 6]
escX = esc2[1:2]
if len(esc2) == 4 and not (escX == 'x' or escX == 'X'):
try:
uni2 = int(esc2, 16)
except ValueError:
raise JSONDecodeError(msg, s, end)
if uni2 & 0xfc00 == 0xdc00:
uni = 0x10000 + (((uni - 0xd800) << 10) |
(uni2 - 0xdc00))
end += 6
char = unichr(uni)
# Append the unescaped character
_append(char)
return _join(chunks), end
# Use speedup if available
scanstring = c_scanstring or py_scanstring
WHITESPACE = re.compile(r'[ \t\n\r]*', FLAGS)
WHITESPACE_STR = ' \t\n\r'
UNQUOTEDDICT = {'/': '/', '\\': '\\', ';': ';', '#': '#',
'=': '=', '{': '{', '}': '}', '[': '[', ']': ']',
':': ':', ',': ',', ' ': ' ', '\t': '\t',
'\f': '\f', '\r': '\r', '\n': '\n'}
QUOTE_DICT = {'"': '"', "'": "'"}
def is_literal(char):
return not UNQUOTEDDICT.get(char, None)
def is_not_quote(char):
return not QUOTE_DICT.get(char, None)
def nexUnquotedKey(s, end):
chunk = STRINGCHUNKUNQUOTED.match(s,end)
for i in range(chunk.end()):
index = i+end
if not is_literal(s[index]):
return s[end:index], index
def JSONObject(state, encoding, strict, scan_once, object_hook,
object_pairs_hook, memo=None,
_w=WHITESPACE.match, _ws=WHITESPACE_STR):
(s, end) = state
# Backwards compatibility
if memo is None:
memo = {}
memo_get = memo.setdefault
pairs = []
# Use a slice to prevent IndexError from being raised, the following
# check will raise a more specific ValueError if the string is empty
nextchar = s[end:end + 1]
# Normally we expect nextchar == '"'
literal_check = False
if is_not_quote(nextchar):
if nextchar in _ws:
end = _w(s, end).end()
nextchar = s[end:end + 1]
# Trivial empty object
literal_check = is_literal(nextchar)
if nextchar == '}':
if object_pairs_hook is not None:
result = object_pairs_hook(pairs)
return result, end + 1
pairs = {}
if object_hook is not None:
pairs = object_hook(pairs)
return pairs, end + 1
elif nextchar != '"' and not literal_check:
raise JSONDecodeError(
"Expecting property name enclosed in double quotes",
s, end)
if not literal_check:
end += 1
while True:
if literal_check:
key, end = nexUnquotedKey(s,end)
else:
if nextchar == "'":
key, end = scanstring(s, end, encoding, strict, SINGLE_QUOTE_BACKSLASH, STRINGCHUNKSINGLEQUOTED.match)
else:
key, end = scanstring(s, end, encoding, strict)
key = memo_get(key, key)
# To skip some function call overhead we optimize the fast paths where
# the JSON key separator is ": " or just ":".
if s[end:end + 1] != ':':
end = _w(s, end).end()
if s[end:end + 1] != ':':
raise JSONDecodeError("Expecting ':' delimiter", s, end)
end += 1
try:
if s[end] in _ws:
end += 1
if s[end] in _ws:
end = _w(s, end + 1).end()
except IndexError:
pass
value, end = scan_once(s, end)
pairs.append((key, value))
try:
nextchar = s[end]
if nextchar in _ws:
end = _w(s, end + 1).end()
nextchar = s[end]
except IndexError:
nextchar = ''
end += 1
if nextchar == '}':
break
elif nextchar != ',':
raise JSONDecodeError("Expecting ',' delimiter or '}'", s, end - 1)
try:
nextchar = s[end]
if nextchar in _ws:
end += 1
nextchar = s[end]
if nextchar in _ws:
end = _w(s, end + 1).end()
nextchar = s[end]
except IndexError:
nextchar = ''
if not literal_check:
end += 1
if is_not_quote(nextchar):
raise JSONDecodeError(
"Expecting property name enclosed in double quotes",
s, end - 1)
if object_pairs_hook is not None:
result = object_pairs_hook(pairs)
return result, end
pairs = dict(pairs)
if object_hook is not None:
pairs = object_hook(pairs)
return pairs, end
def JSONArray(state, scan_once, _w=WHITESPACE.match, _ws=WHITESPACE_STR):
(s, end) = state
values = []
nextchar = s[end:end + 1]
if nextchar in _ws:
end = _w(s, end + 1).end()
nextchar = s[end:end + 1]
# Look-ahead for trivial empty array
if nextchar == ']':
return values, end + 1
elif nextchar == '':
raise JSONDecodeError("Expecting value or ']'", s, end)
_append = values.append
while True:
value, end = scan_once(s, end)
_append(value)
nextchar = s[end:end + 1]
if nextchar in _ws:
end = _w(s, end + 1).end()
nextchar = s[end:end + 1]
end += 1
if nextchar == ']':
break
elif nextchar != ',':
raise JSONDecodeError("Expecting ',' delimiter or ']'", s, end - 1)
try:
if s[end] in _ws:
end += 1
if s[end] in _ws:
end = _w(s, end + 1).end()
except IndexError:
pass
return values, end
class JSONDecoder(object):
"""Simple JSON <http://json.org> decoder
Performs the following translations in decoding by default:
+---------------+-------------------+
| JSON | Python |
+===============+===================+
| object | dict |
+---------------+-------------------+
| array | list |
+---------------+-------------------+
| string | str, unicode |
+---------------+-------------------+
| number (int) | int, long |
+---------------+-------------------+
| number (real) | float |
+---------------+-------------------+
| true | True |
+---------------+-------------------+
| false | False |
+---------------+-------------------+
| null | None |
+---------------+-------------------+
It also understands ``NaN``, ``Infinity``, and ``-Infinity`` as
their corresponding ``float`` values, which is outside the JSON spec.
"""
def __init__(self, encoding=None, object_hook=None, parse_float=None,
parse_int=None, parse_constant=None, strict=True,
object_pairs_hook=None):
"""
*encoding* determines the encoding used to interpret any
:class:`str` objects decoded by this instance (``'utf-8'`` by
default). It has no effect when decoding :class:`unicode` objects.
Note that currently only encodings that are a superset of ASCII work,
strings of other encodings should be passed in as :class:`unicode`.
*object_hook*, if specified, will be called with the result of every
JSON object decoded and its return value will be used in place of the
given :class:`dict`. This can be used to provide custom
deserializations (e.g. to support JSON-RPC class hinting).
*object_pairs_hook* is an optional function that will be called with
the result of any object literal decode with an ordered list of pairs.
The return value of *object_pairs_hook* will be used instead of the
:class:`dict`. This feature can be used to implement custom decoders
that rely on the order that the key and value pairs are decoded (for
example, :func:`collections.OrderedDict` will remember the order of
insertion). If *object_hook* is also defined, the *object_pairs_hook*
takes priority.
*parse_float*, if specified, will be called with the string of every
JSON float to be decoded. By default, this is equivalent to
``float(num_str)``. This can be used to use another datatype or parser
for JSON floats (e.g. :class:`decimal.Decimal`).
*parse_int*, if specified, will be called with the string of every
JSON int to be decoded. By default, this is equivalent to
``int(num_str)``. This can be used to use another datatype or parser
for JSON integers (e.g. :class:`float`).
*parse_constant*, if specified, will be called with one of the
following strings: ``'-Infinity'``, ``'Infinity'``, ``'NaN'``. This
can be used to raise an exception if invalid JSON numbers are
encountered.
*strict* controls the parser's behavior when it encounters an
invalid control character in a string. The default setting of
``True`` means that unescaped control characters are parse errors, if
``False`` then control characters will be allowed in strings.
"""
if encoding is None:
encoding = DEFAULT_ENCODING
self.encoding = encoding
self.object_hook = object_hook
self.object_pairs_hook = object_pairs_hook
self.parse_float = parse_float or float
self.parse_int = parse_int or int
self.parse_constant = parse_constant or _CONSTANTS.__getitem__
self.strict = strict
self.parse_object = JSONObject
self.parse_array = JSONArray
self.parse_string = scanstring
self.parse_single_quoted_string = parse_single_quoted_string
self.memo = {}
self.scan_once = make_scanner(self)
def decode(self, s, _w=WHITESPACE.match, _PY3=PY3):
"""Return the Python representation of ``s`` (a ``str`` or ``unicode``
instance containing a JSON document)
"""
if _PY3 and isinstance(s, binary_type):
s = s.decode(self.encoding)
obj, end = self.raw_decode(s)
end = _w(s, end).end()
if end != len(s):
raise JSONDecodeError("Extra data", s, end, len(s))
return obj
def raw_decode(self, s, idx=0, _w=WHITESPACE.match, _PY3=PY3):
"""Decode a JSON document from ``s`` (a ``str`` or ``unicode``
beginning with a JSON document) and return a 2-tuple of the Python
representation and the index in ``s`` where the document ended.
Optionally, ``idx`` can be used to specify an offset in ``s`` where
the JSON document begins.
This can be used to decode a JSON document from a string that may
have extraneous data at the end.
"""
if idx < 0:
# Ensure that raw_decode bails on negative indexes, the regex
# would otherwise mask this behavior. #98
raise JSONDecodeError('Expecting value', s, idx)
if _PY3 and not isinstance(s, text_type):
raise TypeError("Input string must be text, not bytes")
# strip UTF-8 bom
if len(s) > idx:
ord0 = ord(s[idx])
if ord0 == 0xfeff:
idx += 1
elif ord0 == 0xef and s[idx:idx + 3] == '\xef\xbb\xbf':
idx += 3
return self.scan_once(s, idx=_w(s, idx).end())
2) simplejson has scanner.py python file . Replace that file code with this code
2)simplejson扫描仪。py python文件。用此代码替换该文件代码。
"""JSON token scanner
"""
import re
from .errors import JSONDecodeError
def _import_c_make_scanner():
try:
from ._speedups import make_scanner
return make_scanner
except ImportError:
return None
c_make_scanner = _import_c_make_scanner()
__all__ = ['make_scanner', 'JSONDecodeError']
NUMBER_RE = re.compile(
r'(-?(?:0|[1-9]\d*))(\.\d+)?([eE][-+]?\d+)?',
(re.VERBOSE | re.MULTILINE | re.DOTALL))
def py_make_scanner(context):
parse_object = context.parse_object
parse_array = context.parse_array
parse_string = context.parse_string
parse_single_quoted_string = context.parse_single_quoted_string
match_number = NUMBER_RE.match
encoding = context.encoding
strict = context.strict
parse_float = context.parse_float
parse_int = context.parse_int
parse_constant = context.parse_constant
object_hook = context.object_hook
object_pairs_hook = context.object_pairs_hook
memo = context.memo
def _scan_once(string, idx):
errmsg = 'Expecting value'
try:
nextchar = string[idx]
except IndexError:
raise JSONDecodeError(errmsg, string, idx)
if nextchar == '"':
return parse_string(string, idx + 1, encoding, strict)
elif nextchar == "'":
return parse_single_quoted_string(string, idx + 1, encoding, strict)
elif nextchar == '{':
return parse_object((string, idx + 1), encoding, strict,
_scan_once, object_hook, object_pairs_hook, memo)
elif nextchar == '[':
return parse_array((string, idx + 1), _scan_once)
elif nextchar == 'n' and string[idx:idx + 4] == 'null':
return None, idx + 4
elif nextchar == 't' and string[idx:idx + 4] == 'true':
return True, idx + 4
elif nextchar == 'f' and string[idx:idx + 5] == 'false':
return False, idx + 5
m = match_number(string, idx)
if m is not None:
integer, frac, exp = m.groups()
if frac or exp:
res = parse_float(integer + (frac or '') + (exp or ''))
else:
res = parse_int(integer)
return res, m.end()
elif nextchar == 'N' and string[idx:idx + 3] == 'NaN':
return parse_constant('NaN'), idx + 3
elif nextchar == 'I' and string[idx:idx + 8] == 'Infinity':
return parse_constant('Infinity'), idx + 8
elif nextchar == '-' and string[idx:idx + 9] == '-Infinity':
return parse_constant('-Infinity'), idx + 9
else:
raise JSONDecodeError(errmsg, string, idx)
def scan_once(string, idx):
if idx < 0:
# Ensure the same behavior as the C speedup, otherwise
# this would work for *some* negative string indices due
# to the behavior of __getitem__ for strings. #98
raise JSONDecodeError('Expecting value', string, idx)
try:
return _scan_once(string, idx)
finally:
memo.clear()
return scan_once
make_scanner = c_make_scanner or py_make_scanner
Now you are all set. Simplejson is the fastest and stable Library i have used.
Simplejson是我使用过的最快、最稳定的库。
I have changed few lines of code in simplejson and now this awesome library works for
我在simplejson中改变了几行代码，现在这个很棒的库工作了。
- Unquoted json keys and Single Quoted json strings and keys
- 未引用的json密钥和单引号的json字符串和键。
I have changed python code only. So if you use C extension for speed up boost then this code will not work.
我只修改了python代码。所以如果你使用C扩展来提高速度，那么这段代码就不起作用了。
#4
0
Demjson does your work but it is extremely slow and i mean very slow compare to simplejson. I don't recommend it for production environment.
Demjson做了你的工作，但是它非常慢，我的意思是非常慢地比较simplejson。我不推荐它用于生产环境。
ast.literal_eval() and yaml also doesn't work on all json so you need a more stable solution like simplejson.
literal_eval()和yaml也不能处理所有的json，因此需要一个更稳定的解决方案，比如simplejson。
If you tweak simplejson a little bit then it can do your work. I myself have done it and sharing this code.
如果稍微调整一下simplejson，它就可以完成您的工作。我自己做过，也分享过这段代码。
I am telling it in 2 points
我说的是两点。
1) Download simplejson from github and add it to your project. 2) Now simplejson has decoder.py python file. Replace that file code with this code
1)从github上下载simplejson并添加到项目中。2)现在simplejson有解码器。py python文件。用此代码替换该文件代码。
"""Implementation of JSONDecoder
"""
from __future__ import absolute_import
import re
import sys
import struct
from .compat import u, text_type, binary_type, PY3, unichr
from .scanner import make_scanner, JSONDecodeError
def _import_c_scanstring():
try:
from ._speedups import scanstring
return scanstring
except ImportError:
return None
c_scanstring = _import_c_scanstring()
# NOTE (3.1.0): JSONDecodeError may still be imported from this module for
# compatibility, but it was never in the __all__
__all__ = ['JSONDecoder']
FLAGS = re.VERBOSE | re.MULTILINE | re.DOTALL
def _floatconstants():
if sys.version_info < (2, 6):
_BYTES = '7FF80000000000007FF0000000000000'.decode('hex')
nan, inf = struct.unpack('>dd', _BYTES)
else:
nan = float('nan')
inf = float('inf')
return nan, inf, -inf
NaN, PosInf, NegInf = _floatconstants()
_CONSTANTS = {
'-Infinity': NegInf,
'Infinity': PosInf,
'NaN': NaN,
}
STRINGCHUNK = re.compile(r'(.*?)(["\\\x00-\x1f])', FLAGS)
# Changed Code Here. Added These Two Lines
STRINGCHUNKUNQUOTED = re.compile(r'(.*?)([:\\\x00-\x1f])', FLAGS)
STRINGCHUNKSINGLEQUOTED = re.compile(r"(.*?)(['\\\x00-\x1f])", FLAGS)
BACKSLASH = {
'"': u('"'), '\\': u('\u005c'), '/': u('/'),
'b': u('\b'), 'f': u('\f'), 'n': u('\n'), 'r': u('\r'), 't': u('\t'),
}
# Changed Code Here.
SINGLE_QUOTE_BACKSLASH = {
"'": u("'"), '\\': u('\u005c'), '/': u('/'),
'b': u('\b'), 'f': u('\f'), 'n': u('\n'), 'r': u('\r'), 't': u('\t'),
}
DEFAULT_ENCODING = "utf-8"
# Changed Code Here.
def parse_single_quoted_string(s, end, encoding=None, strict=True):
return py_scanstring(s, end, encoding, strict, SINGLE_QUOTE_BACKSLASH, STRINGCHUNKSINGLEQUOTED.match)
def py_scanstring(s, end, encoding=None, strict=True,
_b=BACKSLASH, _m=STRINGCHUNK.match, _join=u('').join,
_PY3=PY3, _maxunicode=sys.maxunicode):
"""Scan the string s for a JSON string. End is the index of the
character in s after the quote that started the JSON string.
Unescapes all valid JSON string escape sequences and raises ValueError
on attempt to decode an invalid string. If strict is False then literal
control characters are allowed in the string.
Returns a tuple of the decoded string and the index of the character in s
after the end quote."""
if encoding is None:
encoding = DEFAULT_ENCODING
chunks = []
_append = chunks.append
begin = end - 1
while 1:
chunk = _m(s, end)
if chunk is None:
raise JSONDecodeError(
"Unterminated string starting at", s, begin)
end = chunk.end()
content, terminator = chunk.groups()
# Content is contains zero or more unescaped string characters
if content:
if not _PY3 and not isinstance(content, text_type):
content = text_type(content, encoding)
_append(content)
# Terminator is the end of string, a literal control character,
# or a backslash denoting that an escape sequence follows
# Changed Code Here.
if not is_not_quote(terminator):
break
elif terminator != '\\':
if strict:
msg = "Invalid control character %r at"
raise JSONDecodeError(msg, s, end)
else:
_append(terminator)
continue
try:
esc = s[end]
except IndexError:
raise JSONDecodeError(
"Unterminated string starting at", s, begin)
# If not a unicode escape sequence, must be in the lookup table
if esc != 'u':
try:
char = _b[esc]
except KeyError:
msg = "Invalid \\X escape sequence %r"
raise JSONDecodeError(msg, s, end)
end += 1
else:
# Unicode escape sequence
msg = "Invalid \\uXXXX escape sequence"
esc = s[end + 1:end + 5]
escX = esc[1:2]
if len(esc) != 4 or escX == 'x' or escX == 'X':
raise JSONDecodeError(msg, s, end - 1)
try:
uni = int(esc, 16)
except ValueError:
raise JSONDecodeError(msg, s, end - 1)
end += 5
# Check for surrogate pair on UCS-4 systems
# Note that this will join high/low surrogate pairs
# but will also pass unpaired surrogates through
if (_maxunicode > 65535 and
uni & 0xfc00 == 0xd800 and
s[end:end + 2] == '\\u'):
esc2 = s[end + 2:end + 6]
escX = esc2[1:2]
if len(esc2) == 4 and not (escX == 'x' or escX == 'X'):
try:
uni2 = int(esc2, 16)
except ValueError:
raise JSONDecodeError(msg, s, end)
if uni2 & 0xfc00 == 0xdc00:
uni = 0x10000 + (((uni - 0xd800) << 10) |
(uni2 - 0xdc00))
end += 6
char = unichr(uni)
# Append the unescaped character
_append(char)
return _join(chunks), end
# Use speedup if available
scanstring = c_scanstring or py_scanstring
WHITESPACE = re.compile(r'[ \t\n\r]*', FLAGS)
WHITESPACE_STR = ' \t\n\r'
# Changed Code Here.
UNQUOTEDDICT = {'/': '/', '\\': '\\', ';': ';', '#': '#',
'=': '=', '{': '{', '}': '}', '[': '[', ']': ']',
':': ':', ',': ',', ' ': ' ', '\t': '\t',
'\f': '\f', '\r': '\r', '\n': '\n'}
# Changed Code Here.
QUOTE_DICT = {'"': '"', "'": "'"}
# Changed Code Here.
def is_literal(char):
return not UNQUOTEDDICT.get(char, None)
# Changed Code Here.
def is_not_quote(char):
return not QUOTE_DICT.get(char, None)
# Changed Code Here.
def nexUnquotedKey(s, end):
chunk = STRINGCHUNKUNQUOTED.match(s,end)
for i in range(chunk.end()):
index = i+end
if not is_literal(s[index]):
return s[end:index], index
def JSONObject(state, encoding, strict, scan_once, object_hook,
object_pairs_hook, memo=None,
_w=WHITESPACE.match, _ws=WHITESPACE_STR):
(s, end) = state
# Backwards compatibility
if memo is None:
memo = {}
memo_get = memo.setdefault
pairs = []
# Use a slice to prevent IndexError from being raised, the following
# check will raise a more specific ValueError if the string is empty
nextchar = s[end:end + 1]
# Normally we expect nextchar == '"'
literal_check = False
# Changed Code Here.
if is_not_quote(nextchar):
if nextchar in _ws:
end = _w(s, end).end()
nextchar = s[end:end + 1]
# Trivial empty object
literal_check = is_literal(nextchar)
if nextchar == '}':
if object_pairs_hook is not None:
result = object_pairs_hook(pairs)
return result, end + 1
pairs = {}
if object_hook is not None:
pairs = object_hook(pairs)
return pairs, end + 1
elif nextchar != '"' and not literal_check: # Changed Code Here.
raise JSONDecodeError(
"Expecting property name enclosed in double quotes",
s, end)
# Changed Code Here.
if not literal_check:
end += 1
while True:
if literal_check:
key, end = nexUnquotedKey(s,end)
else:
# Changed Code Here.
if nextchar == "'":
key, end = scanstring(s, end, encoding, strict, SINGLE_QUOTE_BACKSLASH, STRINGCHUNKSINGLEQUOTED.match)
else:
key, end = scanstring(s, end, encoding, strict)
key = memo_get(key, key)
# To skip some function call overhead we optimize the fast paths where
# the JSON key separator is ": " or just ":".
if s[end:end + 1] != ':':
end = _w(s, end).end()
if s[end:end + 1] != ':':
raise JSONDecodeError("Expecting ':' delimiter", s, end)
end += 1
try:
if s[end] in _ws:
end += 1
if s[end] in _ws:
end = _w(s, end + 1).end()
except IndexError:
pass
value, end = scan_once(s, end)
pairs.append((key, value))
try:
nextchar = s[end]
if nextchar in _ws:
end = _w(s, end + 1).end()
nextchar = s[end]
except IndexError:
nextchar = ''
end += 1
if nextchar == '}':
break
elif nextchar != ',':
raise JSONDecodeError("Expecting ',' delimiter or '}'", s, end - 1)
try:
nextchar = s[end]
if nextchar in _ws:
end += 1
nextchar = s[end]
if nextchar in _ws:
end = _w(s, end + 1).end()
nextchar = s[end]
except IndexError:
nextchar = ''
# Changed Code Here.
if not literal_check:
end += 1
# Changed Code Here.
if is_not_quote(nextchar):
raise JSONDecodeError(
"Expecting property name enclosed in double quotes",
s, end - 1)
if object_pairs_hook is not None:
result = object_pairs_hook(pairs)
return result, end
pairs = dict(pairs)
if object_hook is not None:
pairs = object_hook(pairs)
return pairs, end
def JSONArray(state, scan_once, _w=WHITESPACE.match, _ws=WHITESPACE_STR):
(s, end) = state
values = []
nextchar = s[end:end + 1]
if nextchar in _ws:
end = _w(s, end + 1).end()
nextchar = s[end:end + 1]
# Look-ahead for trivial empty array
if nextchar == ']':
return values, end + 1
elif nextchar == '':
raise JSONDecodeError("Expecting value or ']'", s, end)
_append = values.append
while True:
value, end = scan_once(s, end)
_append(value)
nextchar = s[end:end + 1]
if nextchar in _ws:
end = _w(s, end + 1).end()
nextchar = s[end:end + 1]
end += 1
if nextchar == ']':
break
elif nextchar != ',':
raise JSONDecodeError("Expecting ',' delimiter or ']'", s, end - 1)
try:
if s[end] in _ws:
end += 1
if s[end] in _ws:
end = _w(s, end + 1).end()
except IndexError:
pass
return values, end
class JSONDecoder(object):
"""Simple JSON <http://json.org> decoder
Performs the following translations in decoding by default:
+---------------+-------------------+
| JSON | Python |
+===============+===================+
| object | dict |
+---------------+-------------------+
| array | list |
+---------------+-------------------+
| string | str, unicode |
+---------------+-------------------+
| number (int) | int, long |
+---------------+-------------------+
| number (real) | float |
+---------------+-------------------+
| true | True |
+---------------+-------------------+
| false | False |
+---------------+-------------------+
| null | None |
+---------------+-------------------+
It also understands ``NaN``, ``Infinity``, and ``-Infinity`` as
their corresponding ``float`` values, which is outside the JSON spec.
"""
def __init__(self, encoding=None, object_hook=None, parse_float=None,
parse_int=None, parse_constant=None, strict=True,
object_pairs_hook=None):
"""
*encoding* determines the encoding used to interpret any
:class:`str` objects decoded by this instance (``'utf-8'`` by
default). It has no effect when decoding :class:`unicode` objects.
Note that currently only encodings that are a superset of ASCII work,
strings of other encodings should be passed in as :class:`unicode`.
*object_hook*, if specified, will be called with the result of every
JSON object decoded and its return value will be used in place of the
given :class:`dict`. This can be used to provide custom
deserializations (e.g. to support JSON-RPC class hinting).
*object_pairs_hook* is an optional function that will be called with
the result of any object literal decode with an ordered list of pairs.
The return value of *object_pairs_hook* will be used instead of the
:class:`dict`. This feature can be used to implement custom decoders
that rely on the order that the key and value pairs are decoded (for
example, :func:`collections.OrderedDict` will remember the order of
insertion). If *object_hook* is also defined, the *object_pairs_hook*
takes priority.
*parse_float*, if specified, will be called with the string of every
JSON float to be decoded. By default, this is equivalent to
``float(num_str)``. This can be used to use another datatype or parser
for JSON floats (e.g. :class:`decimal.Decimal`).
*parse_int*, if specified, will be called with the string of every
JSON int to be decoded. By default, this is equivalent to
``int(num_str)``. This can be used to use another datatype or parser
for JSON integers (e.g. :class:`float`).
*parse_constant*, if specified, will be called with one of the
following strings: ``'-Infinity'``, ``'Infinity'``, ``'NaN'``. This
can be used to raise an exception if invalid JSON numbers are
encountered.
*strict* controls the parser's behavior when it encounters an
invalid control character in a string. The default setting of
``True`` means that unescaped control characters are parse errors, if
``False`` then control characters will be allowed in strings.
"""
if encoding is None:
encoding = DEFAULT_ENCODING
self.encoding = encoding
self.object_hook = object_hook
self.object_pairs_hook = object_pairs_hook
self.parse_float = parse_float or float
self.parse_int = parse_int or int
self.parse_constant = parse_constant or _CONSTANTS.__getitem__
self.strict = strict
self.parse_object = JSONObject
self.parse_array = JSONArray
self.parse_string = scanstring
self.parse_single_quoted_string = parse_single_quoted_string # Changed Code Here.
self.memo = {}
self.scan_once = make_scanner(self)
def decode(self, s, _w=WHITESPACE.match, _PY3=PY3):
"""Return the Python representation of ``s`` (a ``str`` or ``unicode``
instance containing a JSON document)
"""
if _PY3 and isinstance(s, binary_type):
s = s.decode(self.encoding)
obj, end = self.raw_decode(s)
end = _w(s, end).end()
if end != len(s):
raise JSONDecodeError("Extra data", s, end, len(s))
return obj
def raw_decode(self, s, idx=0, _w=WHITESPACE.match, _PY3=PY3):
"""Decode a JSON document from ``s`` (a ``str`` or ``unicode``
beginning with a JSON document) and return a 2-tuple of the Python
representation and the index in ``s`` where the document ended.
Optionally, ``idx`` can be used to specify an offset in ``s`` where
the JSON document begins.
This can be used to decode a JSON document from a string that may
have extraneous data at the end.
"""
if idx < 0:
# Ensure that raw_decode bails on negative indexes, the regex
# would otherwise mask this behavior. #98
raise JSONDecodeError('Expecting value', s, idx)
if _PY3 and not isinstance(s, text_type):
raise TypeError("Input string must be text, not bytes")
# strip UTF-8 bom
if len(s) > idx:
ord0 = ord(s[idx])
if ord0 == 0xfeff:
idx += 1
elif ord0 == 0xef and s[idx:idx + 3] == '\xef\xbb\xbf':
idx += 3
return self.scan_once(s, idx=_w(s, idx).end())
2) simplejson has scanner.py python file . Replace that file code with this code
2)simplejson扫描仪。py python文件。用此代码替换该文件代码。
"""JSON token scanner
"""
import re
from .errors import JSONDecodeError
def _import_c_make_scanner():
try:
from ._speedups import make_scanner
return make_scanner
except ImportError:
return None
c_make_scanner = _import_c_make_scanner()
__all__ = ['make_scanner', 'JSONDecodeError']
NUMBER_RE = re.compile(
r'(-?(?:0|[1-9]\d*))(\.\d+)?([eE][-+]?\d+)?',
(re.VERBOSE | re.MULTILINE | re.DOTALL))
def py_make_scanner(context):
parse_object = context.parse_object
parse_array = context.parse_array
parse_string = context.parse_string
parse_single_quoted_string = context.parse_single_quoted_string # Changed Code Here.
match_number = NUMBER_RE.match
encoding = context.encoding
strict = context.strict
parse_float = context.parse_float
parse_int = context.parse_int
parse_constant = context.parse_constant
object_hook = context.object_hook
object_pairs_hook = context.object_pairs_hook
memo = context.memo
def _scan_once(string, idx):
errmsg = 'Expecting value'
try:
nextchar = string[idx]
except IndexError:
raise JSONDecodeError(errmsg, string, idx)
if nextchar == '"':
return parse_string(string, idx + 1, encoding, strict)
elif nextchar == "'":
return parse_single_quoted_string(string, idx + 1, encoding, strict) # Changed Code Here.
elif nextchar == '{':
return parse_object((string, idx + 1), encoding, strict,
_scan_once, object_hook, object_pairs_hook, memo)
elif nextchar == '[':
return parse_array((string, idx + 1), _scan_once)
elif nextchar == 'n' and string[idx:idx + 4] == 'null':
return None, idx + 4
elif nextchar == 't' and string[idx:idx + 4] == 'true':
return True, idx + 4
elif nextchar == 'f' and string[idx:idx + 5] == 'false':
return False, idx + 5
m = match_number(string, idx)
if m is not None:
integer, frac, exp = m.groups()
if frac or exp:
res = parse_float(integer + (frac or '') + (exp or ''))
else:
res = parse_int(integer)
return res, m.end()
elif nextchar == 'N' and string[idx:idx + 3] == 'NaN':
return parse_constant('NaN'), idx + 3
elif nextchar == 'I' and string[idx:idx + 8] == 'Infinity':
return parse_constant('Infinity'), idx + 8
elif nextchar == '-' and string[idx:idx + 9] == '-Infinity':
return parse_constant('-Infinity'), idx + 9
else:
raise JSONDecodeError(errmsg, string, idx)
def scan_once(string, idx):
if idx < 0:
# Ensure the same behavior as the C speedup, otherwise
# this would work for *some* negative string indices due
# to the behavior of __getitem__ for strings. #98
raise JSONDecodeError('Expecting value', string, idx)
try:
return _scan_once(string, idx)
finally:
memo.clear()
return scan_once
make_scanner = c_make_scanner or py_make_scanner
Now you are all set. Simplejson is the fastest and stable Library i have used.
Simplejson是我使用过的最快、最稳定的库。
I have changed few lines of code in simplejson and now this awesome library works for
我在simplejson中改变了几行代码，现在这个很棒的库工作了。
- Unquoted json keys and Single Quoted json strings and keys
- 未引用的json密钥和单引号的json字符串和键。
I have changed python code only. So if you use C extension for speed up boost then this code will not work.
我只修改了python代码。所以如果你使用C扩展来提高速度，那么这段代码就不起作用了。
Wherever I made changes I have added Comment # Changed Code Here
无论我做什么更改，我都在这里添加了注释# Changed代码
I mistakenly answered previously as guest user and now I can not login to edit that answer so i posted in new thread.
我之前错误地以访客用户的身份回答，现在我无法登录来编辑那个答案，所以我在new thread上发帖。