Python十进制小数怎么转二进制

Question

将十进制0.25转为二进制0.01的Python程序

Answer 1

def dec2bin(X):
    x = X
    x -= int(X)
    bins = []
    while x:
        x *= 2
        bins.append('1' if x >= 1 else '0')
        x -= int(x)
    return bin(int(X))+'.' + ''.join(bins)


print(dec2bin(0.25))

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