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- import re
- def helper(string, pattern):
- match = re.match(string, pattern)
- if match:
- print match.group(0)
- else:
- print False
- search = re.search(string, pattern)
- if search:
- print search.group(0)
- else:
- print False
- find = re.findall(string, pattern)
- print find
- helper("a{,2}b", "b")
- helper("a{,2}b", "ab")
- helper("a[{,}]b", "a{b")
- helper("a\{,b", "a{,b")
- helper("a{,2}[a-z]", "ab")
- helper("a{,2}b{,5}", "")
- helper("a[{,[a-z]]b", "a,cb")
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