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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def index_of(pattern):
    '''Return the index of a given pattern'''
    return (pattern[0,0] * 2**0 + pattern[0,1] * 2**1 + pattern[0,2] * 2**2 +
            pattern[1,0] * 2**3 + pattern[1,1] * 2**4 + pattern[1,2] * 2**5 +
            pattern[2,0] * 2**6 + pattern[2,1] * 2**7 + pattern[2,2] * 2**8)