How to find overlapping matches with a regexp?

Question

>>> match = re.findall(r\'\\w\\w\', \'hello\')
>>> print match
[\'he\', \'ll\']

Since \\w\\w means two characters, \'he\' and \'l

Answer 1

You can use the new Python regex module, which supports overlapping matches.

>>> import regex as re
>>> match = re.findall(r'\w\w', 'hello', overlapped=True)
>>> print match
['he', 'el', 'll', 'lo']