Determining if a string contains a word [duplicate]

Answer 1

The easiest way to do this is probably the following:

words = set('blue yellow'.split())
if 'blue' in words:
    print 'yes'
else:
    print 'no'

If your words list is really huge, you'll get a speed increase by wrapping words.split() in set as testing set membership is more computationally efficient than testing list membership.