32 lines
595 B
Python
32 lines
595 B
Python
# test groups, and nested groups
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try:
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import re
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except ImportError:
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print("SKIP")
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raise SystemExit
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def print_groups(match):
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print("----")
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try:
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i = 0
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while True:
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print(match.group(i))
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i += 1
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except IndexError:
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pass
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m = re.match(r"(([0-9]*)([a-z]*)[0-9]*)", "1234hello567")
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print_groups(m)
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m = re.match(r"([0-9]*)(([a-z]*)([0-9]*))", "1234hello567")
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print_groups(m)
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# optional group that matches
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print_groups(re.match(r"(a)?b(c)", "abc"))
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# optional group that doesn't match
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print_groups(re.match(r"(a)?b(c)", "bc"))
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