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.
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Why do you need to change this? Python can do just fine with / as a path separator.JoshD– JoshD2010-10-22 03:34:23 +00:00Commented Oct 22, 2010 at 3:34
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5 Answers
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.
Comments
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.
2 Comments
akonsu
it does not seem that the original poster believes that every solution needs regular expression.
ghostdog74
@akonsu, almost all his previous posts are about regex.
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 )
1 Comment
Swiss
You can use a raw string to make this cleaner.
\\ is means "\\" or r"\\" ?
re.sub(r'/', r'\\', 'a/b/c')
use r'....' alwayse when you use regular expression.
Comments
'\\\'.join(r'/a/c/a.doc'.split("/"))
