python - Find all upper, lower and mixed case combinations of a string -

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i want write program take string, let's "fox", display: 

fox, fox, fox, fox, fox, fox, fox, fox

my code far:

string = raw_input("enter string: ") length = len(string) in range(0, length):     j in range(0, length):         if == j:             x = string.replace(string[i], string[i].upper())             print x

output far:

enter string: fox fox fox fox >>>  

>>> import itertools >>> map(''.join, itertools.product(*((c.upper(), c.lower()) c in 'fox'))) ['fox', 'fox', 'fox', 'fox', 'fox', 'fox', 'fox', 'fox']

or

>>> s = 'fox' >>> map(''.join, itertools.product(*zip(s.upper(), s.lower())))

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