Write a program that responds to a positive integer passed on the command line with the number of bits needed to express that number in binary.

You may want to rephrase the output.

'''

#!/usr/local/bin/python3

### Written for Python version 3! ###

import sys

num = int (sys. argv[ 1 ])

exp = 0

while (num > 2**exp):

exp + = 1

print ("It takes %d bits to get to the center of a Tootsie Roll" % exp)

exit (0)

'''