def char2nums(s):

        digits = {'0': 0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9}

        return digits[s]

    def fn(x, y):

        return x * 10 + y

    doindex = s.index('.')

    s = s.replace('.', '')

    b = list((map(char2nums, s)))

    c = reduce(fn,b) / (10 ** (len(s) - doindex))

    return c