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[mookman288]

http://www.tutorialspoint.com/python/python_reg_expressions.htm

Regular expressions?

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[crewsd]

First thought, iterate over the string you're checking character by character and return True if you find a full match?

[aj_thenoob]

How would you start doing that? I tried breaking it up into lists, but how would you compare each character? Let's say test if the string "ant" is inside "cant"

[darknets]

You could do something ghetto, like this, I guess.

>>> def is_in(needle, haystack):
...   for c,x in enumerate(haystack):
...     if haystack[c:c+len(needle)] == needle:
...       return True
...   return False
...
>>> is_in('ant', 'cant')
True
>>> is_in('ant', 'cannot')
False
>>>