[issue16007] Improved Error message for failing re expressions

[Ling Li]

New submission from Ling Li:

Hi,

I would like to make a small improvement to the exception raised when _compile() function fails with exception on line 245. 

Please see attached amended file. The line of code is amended from: 

    raise error, v # invalid expression

to:

    raise error, r'%s with pattern: %s' % (v, pattern) # invalid expression

As this is my first contribution, please let me know if this is the correct procedure to submit changes.

Kind regards,
Ling

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components: Regular Expressions
files: re.py
messages: 171051
nosy: ezio.melotti, lingster, mrabarnett
priority: normal
severity: normal
status: open
title: Improved Error message for failing re expressions
type: enhancement
versions: Python 2.7
Added file: http://bugs.python.org/file27266/re.py

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16007>
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