Message 71326 - Python tracker

➜

This issue tracker has been migrated to GitHub , and is currently read-only.
For more information, see the GitHub FAQs in the Python's Developer Guide.

In-reply-to
Author	pitrou
Recipients	misha, pitrou
Date	2008年08月18日.13:25:09
SpamBayes Score	0.00068009354
Marked as misclassified	No
Message-id	<1219065910.59.0.886490234706.issue3587@psf.upfronthosting.co.za>

Content
The re.M flag is an attribute of the compiled pattern, and as such it must be passed to compile(), not to findall(). These all work: >>> re.compile(r"[a-z]+").findall("hello world") ['hello', 'world'] >>> re.compile(r"[a-z]+", re.M).findall("hello world") ['hello', 'world'] >>> re.compile(r"(?m)[a-z]+").findall("hello world") ['hello', 'world'] The second argument to the findall() method of compile objects is the start position to match from (see http://docs.python.org/lib/re-objects.html). This explains the behaviour you are witnessing: >>> re.M 8 >>> re.compile(r"[a-z]+").findall("hello world", 8) ['rld']

Content

The re.M flag is an attribute of the compiled pattern, and as such it
must be passed to compile(), not to findall(). 
These all work:
>>> re.compile(r"[a-z]+").findall("hello world")
['hello', 'world']
>>> re.compile(r"[a-z]+", re.M).findall("hello world")
['hello', 'world']
>>> re.compile(r"(?m)[a-z]+").findall("hello world")
['hello', 'world']
The second argument to the findall() method of compile objects is the
start position to match from (see
http://docs.python.org/lib/re-objects.html). This explains the behaviour
you are witnessing:
>>> re.M
8
>>> re.compile(r"[a-z]+").findall("hello world", 8)
['rld']

History
Date	User	Action	Args
2008年08月18日 13:25:10	pitrou	set	recipients: + pitrou, misha
2008年08月18日 13:25:10	pitrou	set	messageid: <1219065910.59.0.886490234706.issue3587@psf.upfronthosting.co.za>
2008年08月18日 13:25:09	pitrou	link	issue3587 messages
2008年08月18日 13:25:09	pitrou	create

homepage