New submission from Tom Dawes <tomdawe...@gmail.com>:
re.finditer appears to fail to match within the first 7 characters in a string
when re.MULTILINE is used:
>>> REGEX = re.compile("y")
>>> [list(m.start() for m in REGEX.finditer("{}y".format("x"*i), re.MULTILINE))
>>> for i in range(10)]
[[], [], [], [], [], [], [], [], [8], [9]]
Without re.MULTILINE, this works fine:
>>> [list(m.start() for m in REGEX.finditer("{}y".format("x"*i))) for i in
>>> range(10)]
[[0], [1], [2], [3], [4], [5], [6], [7], [8], [9]]
Passing re.MULTILINE to re.compile doesn't seem to have any effect.
----------
components: Regular Expressions
messages: 326911
nosy: ezio.melotti, mrabarnett, tdawes
priority: normal
severity: normal
status: open
title: re.finditer behaviour in re.MULTILINE mode fails to match first 7
characters
type: behavior
versions: Python 2.7, Python 3.4, Python 3.5, Python 3.6, Python 3.7, Python 3.8
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue34873>
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