读取的文件是：C:\Users\jetway\Desktop\a.txt
内容为：
vol-a987889b | 20M | null | available | 2011-11-25 13:11:20 | null
vol-e68ffaa9 | 200M | | available | 2011-11-18 02:56:45 |
vol-f2483bd1 | 1G | null | in-use | 2010-11-16 11:30:52 | | Attached | | ddc | vm1 | /dev/xvda3 | 2010-11-16 11:35:11 |
全部读取文件：
>>> fileHandle = open('C:\\Users\\jetway\\Desktop\\a.txt')
>>> print fileHandle.read()
vol-a987889b | 20M | null | available | 2011-11-25 13:11:20 | null
vol-e68ffaa9 | 200M | | available | 2011-11-18 02:56:45 |
>>> fileHandle.close()
逐行读取文件：
>>> fileHandle = open('C:\\Users\\jetway\\Desktop\\a.txt')
>>> print fileHandle.readline()
vol-a987889b | 20M | null | available | 2011-11-25 13:11:20 | null
>>> print fileHandle.tell()
68
>>> print fileHandle.readline()
vol-e68ffaa9 | 200M | | available | 2011-11-18 02:56:45 |
>>> print fileHandle.tell()
127
>>> fileHandle.close()
分析文件中的字符串，初步，先读取并赋值：
>>> def ana():
fileHandle = open('C:\\Users\\jetway\\Desktop\\a.txt')
a = fileHandle.readline()
b = fileHandle.readline()
fileHandle.close()
print "a= " + a + "\n" + "b= "+b
>>> ana()
a= vol-a987889b | 20M | null | available | 2011-11-25 13:11:20 | null
b= vol-e68ffaa9 | 200M | | available | 2011-11-18 02:56:45 |
这次是分离字符串，以“|”为界限：
>>> def splitstr():
fileHandle = open('C:\\Users\\jetway\\Desktop\\a.txt')
a = fileHandle.readline()
fileHandle.close()
aa = a.split('|')
for i in aa:
i.strip()
for j in aa:
print j+'\n'
>>> splitstr()
vol-a987889b
20M
null
available
2011-11-25 13:11:20
null
我的目标是：分析其中的文字并提取相应的信息
于是最终的代码为：
def index():
vlist = []
vbsvols = []
fileHandle = open('c:\\Users\\jetway\\Desktop\\a.txt')
while True:
s = fileHandle.readline()
if s=="":
break
else:
s = s.strip()
vlist.append(s)
fileHandle.close()
for v in vlist:
x = v.split('|')
for xx in x:
xx.strip()
ss = {"vid":x[0], "size":x[1], "status":x[3], "createdtime":x[4]}
vbsvols.append(ss)
return vbsvols
去除两端空格后的代码：
def index():
vlist = []
vbsvols = []
fileHandle = open('c:\\Users\\jetway\\Desktop\\a.txt')
while True:
s = fileHandle.readline()
if s=="":
break
else:
s = s.strip()
vlist.append(s)
fileHandle.close()
for v in vlist:
x = v.split('|')
for xx in x:
xx.strip()
ss = {}
if x[3].strip() == "available":
ss = {"vid":x[0].strip(), "size":x[1].strip(), "status":x[3].strip(), "createdtime":x[4].strip(), "attachat":"none"}
elif x[3].strip() =="in-use":
ss = {"vid":x[0].strip(), "size":x[1].strip(), "status":x[3].strip(), "createdtime":x[4].strip(), "attachat":x[10].strip()}
vbsvols.append(ss)
return vbsvols
补充：寻找某文件夹下的txt文件：
>>> import fnmatch
>>> import os
>>> import re
>>> filePattern = fnmatch.translate('*.txt')
>>> for fileName in os.listdir('C:\\Users\\jetway\\Desktop\\'):
if re.match(filePattern, fileName):
print fileName