Argv - String into Integer

Question

I\'m pretty new at python and I\'ve been playing with argv. I wrote this simple program here and getting an error that says :

TypeError: %d format: a

Answer 1

Assign the converted integers to those variables:

num1 = int(argv[1])  #assign the return int to num1
num2 = int(argv[2])

Doing just:

int(argv[1])
int(argv[2])

won't affect the original items as int returns a new int object, the items inside sys.argv are not affected by that.

Yo modify the original list you can do this:

argv[1:] = [int(x) for x in argv[1:]]
file_name, num1, num2 = argv  #now num1 and num2 are going to be integers