_re

A regular expression (or RegEx) specifies a set of strings that matches it.

A regex is a sequence of characters that defines a search pattern, mainly for the use of string pattern matching.

The re.search() expression scans through a string looking for the first location where the regex pattern produces a match.
It either returns a MatchObject instance or returns None if no position in the string matches the pattern.

_Code

>>> import re
>>> print bool(re.search(r"ly","similarly"))
True

The re.match() expression only matches at the beginning of the string.
It either returns a MatchObject instance or returns None if the string does not match the pattern.
_Code

>>> import re
>>> print bool(re.match(r"ly","similarly"))
False
>>> print bool(re.match(r"ly","ly should be in the beginning"))
True

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