DevOps in Python by Moshe Zadka
Author:Moshe Zadka
Language: eng
Format: epub
ISBN: 9781484244333
Publisher: Apress
When the number of groups is significant, or when modifying the group, managing the indices to the group can prove to be a challenge. If analysis of the groups is needed, we can also name the groups.>>> reobj = re.compile('(?P<prefix>a)(?P<body>b+)(?P<suffix>a)')
>>> m = reobj.search('hello abba world')
>>> m.group('prefix')
'a'
>>> m.group('body')
'bb'
>>> m.group('suffix')
'a'
Since regular expressions can get dense, there is a way to make them a bit easier to read: the verbose mode.>>> reobj = re.compile(r"""
... (?P<prefix>a) # The beginning -- always an a
... (?P<body>b+) # The middle -- any numbers of b, for emphasis
... (?P<suffix>a) # An a at the end to properly anchor
... """, re.VERBOSE)
>>> m = reobj.search("hello abba world")
>>> m.groups()
('a', 'bb', 'a')
>>> m.group('prefix'), m.group('body'), m.group('suffix')
('a', 'bb', 'a')
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