python 进制转换器（16进制除外）

import random

def trans(num,step):
    s=""
    while num>0:
        x=num%step
        num=int(num/step)
        s+=str(x)
    s1=s[::-1]
    print(s1)
num=random.randint(0,100)
print(num)
trans(num,2)