Question

I can not figure out why my code is not working,

key_one= raw_input("Enter key (0 <= key <= 127): ")

if key_one in range(128):
    bin_key_one=bin(key_one)[2:]
    print bin_key_one               
else:
    print "You have to enter key (0 <= key <= 127)"

when i enter a number between 0 and 127, it keeps on going to the else!
can some one tell me why?

Answer 1

raw_input will return a string, so your if comparison fails (you’re comparing an int with a string). Try casting:

key_one = int(raw_input('enter key: '))