Converts a "string" into "StRiNg".

crazify.py

#!/usr/bin/env python3
#-*- coding: utf-8 -*-

from __future__ import print_function
import sys

var = sys.argv[1:]

def crazify(string):
    """Converts first index of string to uppercase followed by lowercase and so on.
    """
    i = 0
    output = []
    for letter in string:
        if i == 0:
            output.append(letter.upper())
            i = 1
        elif i == 1:
            output.append(letter.lower())
            i = 0
    return ''.join(output)

if __name__ == '__main__':
    for word in var:
        print(crazify(word), "", end='')
    print()