Python模拟中的模拟属性?

您正在将字符串传递给bin()函数:


>>> bin('10')

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

TypeError: 'str' object cannot be interpreted as an index

给它一个整数来代替:


>>> bin(10)

'0b1010'

通过将raw_input()结果转换为int():


n = int(raw_input())

提示:您可以通过给负片跨度轻松地反转字符串:


>>> 'forward'[::-1]

'drawrof'

因此您可以将功能简化为:


def reversebinary():

    n = int(raw_input())

    bin_n = bin(n)[2:]

    revbin = bin_n[::-1]

    return int(revbin, 2)

甚至:


def reversebinary():

    n = int(raw_input())

    return int(bin(n)[:1:-1], 2)


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