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Python Regular Expressions

How to match a simple stuff in python:

import re
rg = re.compile("delete change (\d+) ")
m = rg.match("l.cpp#21 - delete change 20007 (t")

Then:

>>> m.group(0)
'delete change 20007 '
>>> m.group(1)
'20007'


rg.search() is similar to rg.match(), but only matches things at the beginning of the string i.e. it would match "delete change 20 " but not "foo delete change 20 ".
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