rcase.py

#!/bin/python3
import random
import sys
import pyperclip

words = sys.argv[1:]
result = ""
for word in words:
    for letter in word:
        choice = random.randint(0,1)
        if choice == 1:
            result += letter.lower()
        else:
            result += letter.upper()
    result += " "
pyperclip.copy(result)