Case insensitive regular expression without re.compile?

python regex case-sensitive case-insensitive

Pass re.IGNORECASE to the flags param of search, match, or sub:

re.search('test', 'TeSt', re.IGNORECASE)re.match('test', 'TeSt', re.IGNORECASE)re.sub('test', 'xxxx', 'Testing', flags=re.IGNORECASE)

python regex case-sensitive case-insensitive

You can also perform case insensitive searches using search/match without the IGNORECASE flag (tested in Python 2.7.3):

re.search(r'(?i)test', 'TeSt').group()    ## returns 'TeSt're.match(r'(?i)test', 'TeSt').group()     ## returns 'TeSt'

python regex case-sensitive case-insensitive

The case-insensitive marker, (?i) can be incorporated directly into the regex pattern:

>>> import re>>> s = 'This is one Test, another TEST, and another test.'>>> re.findall('(?i)test', s)['Test', 'TEST', 'test']

CodeHunter