def indexOf(a, b):
    "Return the first index of b in a."
    for i, j in enumerate(a):
        if j == b:
            return i
    else:
        raise ValueError('sequence.index(x): x not in sequence')
def indexOf(a, b):
    "Return the first index of b in a."
    for i, j in enumerate(a):
        if j == b:
            return i
    else:
        raise ValueError('sequence.index(x): x not in sequence')
def indexOf ( a , b ) : for i , j in enumerate ( a ) : if j == b : return i else : raise ValueError ( 'sequence.index(x): x not in sequence' )
Return the first index of b in a.
Return the first index of b in a .