How to check if a given number is a power of two?

Question

The code below isn\'t working right for some inputs.

a, i = set(), 1
while i <= 10000:
    a.add(i)
    i <<=         


        

Answer 1

I have written a python function that will check the power of any number:

import math
def checkPowTwo(num):
  x = int(input("The power of the number to be calculated is: "))
  output = math.log(num, x)
  residue = output - int(output)
  if residue == 0:
    print (num, " is a power of the number desired.")
  else:
    print (num, " is not a power of the number desired.")
y = checkPowTwo(int(input()))