你可以用just:

"{0:b}".format(n)

在我看来，这是最简单的方法!

def int_to_bin(num, fill):
    bin_result = ''

    def int_to_binary(number):
        nonlocal bin_result
        if number > 1:
            int_to_binary(number // 2)
        bin_result = bin_result + str(number % 2)

    int_to_binary(num)
    return bin_result.zfill(fill)

('0' * 7 + bin(6)[2:])[-8:]

or

right_side = bin(6)[2:]
'0' * ( 8 - len( right_side )) + right_side

. .或者如果你不确定它应该总是8位，你可以把它作为一个参数传递:

>>> '%0*d' % (8, int(bin(6)[2:]))
'00000110'

简单的递归代码:

 def bin(n,number=('')):
   if n==0:
     return(number)
   else:
     number=str(n%2)+number
     n=n//2
     return bin(n,number)

    def convertToBinary(self, n):
        result=""
        if n==0:
            return 0

        while n>0:
            r=n%2
            result+=str(r)
            n=int(n/2)
        if n%2==0:
            result+="0"
        return result[::-1]