EOL - scanning single-quoted string
Ajay Brar
abra9823 at mail.usyd.edu.au
Wed Aug 4 11:09:23 EDT 2004
Christopher T King wrote:
>On Wed, 4 Aug 2004, Ajay wrote:
>
>
>
>>i got the escape character bit, but i still get an error
>>
>>
>>>>>str='/My Documents/um_ajay.xml'
>>>>>re.subn('/', '\\', str)
>>>>>
>>>>>
>
>Ah... regex quoting issues. The '\\' makes a single '\' appear in the
>string, but being a regex, a single '\' in a string is again interpreted
>as a backslash. You will either have to write '\\\\' or use a raw string,
>r'\\'. Raw strings pass backslashes untouched, so you only need to
>backslash it once for the regex.
>
>However, the best solution for your problem is not to use regexes, but to
>use the os.path module:
>
>
>
>>>>from os.path import normpath, abspath
>>>>str = '/My Documents/um_ajay.xml'
>>>>normpath(str)
>>>>
>>>>
>'\\My Documents\\um_ajay.xml'
>
>
>>>>abspath(str)
>>>>
>>>>
>'C:\\My Documents\\um_ajay.xml'
>
>normpath() 'tidies up' the path, a task which includes correcting path
>seperators, amoung other things. abspath() does the same thing as
>normpath(), but also resolves relative paths into absolute ones. Always
>look to os.path when doing anything involving paths; it probably has the
>function you want, and is portable across platforms.
>
>
thanks. works well now
--
Ajay Brar
CS Honours 2004
Smart Internet Technology Research Group
http://www.it.usyd.edu.au/~abrar1
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