Answer by Reza Abtin for Python int to binary string?

Yet another solution with another algorithm, by using bitwise operators.

def int2bin(val):    res=''    while val>0:        res += str(val&1)        val=val>>1     # val=val/2     return res[::-1]   # reverse the string

A faster version without reversing the string.

def int2bin(val):   res=''   while val>0:       res = chr((val&1) + 0x30) + res       val=val>>1       return res