Hi, I need to do something in regex but I'm really not good at it, long time didn't do that .
/a/c/a.doc
I need to change it to
\\a\\c\\a.doc
Please trying to do it by using regular expression in Python.
+1
A:
You can do it without regular expressions:
x = '/a/c/a.doc'
x = x.replace('/',r'\\')
But if you really want to use re:
x = re.sub('/', r'\\', x )
Graeme Perrow
2010-10-22 02:05:58
You can use a raw string to make this cleaner.
Swiss
2010-10-22 02:15:14
@Swiss Thanks for the suggestion - I fixed my answer.
Graeme Perrow
2010-10-22 03:32:57
+2
A:
why do you think you every solution to your problem needs regular expression??
>>> s="/a/c/a.doc"
>>> '\\'.join(s.split("/"))
'\\a\\c\\a.doc'
By the way, if you are going to change path separators, you may just as well use os.path.join
eg
mypath = os.path.join("C:\\","dir","dir1")
Python will choose the correct slash for you. Also, check out os.sep if you are interested.
ghostdog74
2010-10-22 02:07:17
it does not seem that the original poster believes that every solution needs regular expression.
akonsu
2010-10-22 02:13:37
+3
A:
I'm entirely in favor of helping user483144 distinguish "solution" from "regular expression", as the previous two answerers have already done. It occurs to me, moreover, that os.path.normpath() http://docs.python.org/library/os.path.html might be what he's really after.
Cameron Laird
2010-10-22 02:13:48
A:
\\ is means "\\" or r"\\" ?
re.sub(r'/', r'\\', 'a/b/c')
use r'....' alwayse when you use regular expression.
guilin 桂林
2010-10-22 03:08:40