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re.sub() bug with IGNORECASE #72038
Description
| BPO | 27851 |
|---|---|
| Nosy | @ezio-melotti, @bitdancer |
| Files |
Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.
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GitHub fields:
assignee = None
closed_at = <Date 2016-08-24.15:59:54.318>
created_at = <Date 2016-08-24.15:57:11.028>
labels = ['expert-regex', 'type-bug', 'invalid']
title = 're.sub() bug with IGNORECASE'
updated_at = <Date 2016-08-24.18:28:02.106>
user = 'https://bugs.python.org/DanWilt'bugs.python.org fields:
activity = <Date 2016-08-24.18:28:02.106>
actor = 'Dan Wilt'
assignee = 'none'
closed = True
closed_date = <Date 2016-08-24.15:59:54.318>
closer = 'r.david.murray'
components = ['Regular Expressions']
creation = <Date 2016-08-24.15:57:11.028>
creator = 'Dan Wilt'
dependencies = []
files = ['44212']
hgrepos = []
issue_num = 27851
keywords = []
message_count = 3.0
messages = ['273575', '273576', '273584']
nosy_count = 4.0
nosy_names = ['ezio.melotti', 'mrabarnett', 'r.david.murray', 'Dan Wilt']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue27851'
versions = ['Python 2.7', 'Python 3.5']
Activity
DanWilt commentedon Aug 24, 2016
Working with re.sub() noted strange behavior with re.I set, seems like a bug. Noted in both Python 2.7.12 and Python 3.5.2, Anaconda custom build (32-bit) on Windows 7.
The first case is the expected behavior, the second and third aren't. Oddly enough,
MWE file attached (python3)
Thanks, I'm a heavy python user, but not all that advanced - hope this is helpful and I'm not just being stupid.
bitdancer commentedon Aug 24, 2016
I really wish we could "fix" this somehow, since we get an issue opened for it probably every two or three months.
The fourth argument to re.sub is the count, not the flags.
DanWilt commentedon Aug 24, 2016
Thanks! That helps. I apologize for raising a non-existent issue.
Dan
On Wed, Aug 24, 2016 at 11:59 AM, R. David Murray <report@bugs.python.org>
wrote: