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26 lines
828 B
Python
26 lines
828 B
Python
# (C) Copyright David Abrahams 2001. Permission to copy, use, modify, sell and
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# distribute this software is granted provided this copyright notice appears in
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# all copies. This software is provided "as is" without express or implied
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# warranty, and with no claim as to its suitability for any purpose.
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import re
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def transform (list, pattern, indices = [1]):
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""" Matches all elements of 'list' agains the 'pattern'
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and returns a list of the elements indicated by indices of
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all successfull matches. If 'indices' is omitted returns
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a list of first paranthethised groups of all successfull
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matches.
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"""
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result = []
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for e in list:
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m = re.match (pattern, e)
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if m:
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for i in indices:
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result.append (m.group (i))
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return result
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