Account for upper and lower case in Python

Question

Is there a way to account for both upper and lower case letter in python? Here's the example:

if 'jay' in rapper:
    print 'blah blah blah'

I want the if statement to be true for Jay or jay.

What can I do?

Answer 1

if 'jay' in rapper.lower():
    #do stuff

Answer 2

Just to offer an alternative (@JoelCornett's solution is nicer) you could also do:

if rapper in ('jay', 'Jay'):
   # do stuff

An advantage this approach has is that you could check for different names (though not a requirement in this case).

I am assuming that rapper is a string in the absence of any other information.

Answer 3

if rapper is a list of strings

if "jay" in [x.lower() for x in rapper]:
    # do something
    print "done"

Answer 4

The simplest way would be to do this (assuming rapper is a non-null string):

if rapper.strip().lower() == 'jay':
    print 'blah blah blah'

Another option, using regular expressions:

import re
if re.match(r'Jay', rapper.strip(), re.IGNORECASE):
    print 'blah blah blah'

The above will work for rapper = 'jay' or 'jAy' or 'JAY' or ' Jay ' ... etc.