Possible Duplicate:
What is the difference between Python’s re.search and re.match?可能重复:Python的re.search和re.match有什么区别?
I have recently been jumping into understanding regex with python.
我最近刚刚开始理解regex和python。
I have been looking at the api; I can't seem to understand the difference between:
我一直在研究这个api;我似乎无法理解这两者之间的区别:
re.match vs. re.search
re.match与re.search
when is it best to use each of these? pros? cons?
什么时候最好使用它们?优点呢?缺点呢?
Please and thank you.
请和谢谢。
3 个解决方案
#1
56
re.match() matches only from the beginning of the string. A common gotcha. See the documentation.
匹配()仅从字符串的开始处匹配。一个共同的问题。见文档。
#2
37
From search() vs. match():
从搜索()和匹配():
re.match() checks for a match only at the beginning of the string, while re.search() checks for a match anywhere in the string.
re.match()只在字符串的开头检查匹配，而re.search()检查字符串中的任何地方是否匹配。
>>> re.match("c", "abcdef") # No match
>>> re.search("c", "abcdef") # Match
<_sre.SRE_Match object at ...>
#3
7
I just learned that you can also search for substrings like this:
我刚知道你也可以搜索像这样的子字符串:
if 'c' in 'abcdef'
# True
#1
56
re.match() matches only from the beginning of the string. A common gotcha. See the documentation.
匹配()仅从字符串的开始处匹配。一个共同的问题。见文档。
#2
37
From search() vs. match():
从搜索()和匹配():
re.match() checks for a match only at the beginning of the string, while re.search() checks for a match anywhere in the string.
re.match()只在字符串的开头检查匹配，而re.search()检查字符串中的任何地方是否匹配。
>>> re.match("c", "abcdef") # No match
>>> re.search("c", "abcdef") # Match
<_sre.SRE_Match object at ...>
#3
7
I just learned that you can also search for substrings like this:
我刚知道你也可以搜索像这样的子字符串:
if 'c' in 'abcdef'
# True