Python regular expression

[Wehrdamned]

Hi,

As I understand it, python uses a pcre engine to work with regular
expression.
My question is, then, why expressions like :

>>re.compile('asd|(?-i:QWE)', re.I)

Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "/usr/lib/python2.4/sre.py", line 180, in compile
return _compile(pattern, flags)
File "/usr/lib/python2.4/sre.py", line 227, in _compile
raise error, v # invalid expression
sre_constants.error: unexpected end of pattern

don't work? They are ok in perl...

Thanks in advance.

[Roberto Bonvallet]

Wehrdamned wrote:

As I understand it, python uses a pcre engine to work with regular
expression.

[...]

My question is, then, why expressions like :

>>>re.compile('asd|(?-i:QWE)', re.I)

[...]

don't work? They are ok in perl...

From http://docs.python.org/lib/module-re.html:

This module provides regular expression matching operations
*similar* to those found in Perl.

Similar != the same. See http://docs.python.org/lib/re-syntax.html for
details about valid syntax for regular expressions in Python.

Cheers,
--
Roberto Bonvallet