Rock, paper, scissor

rps.py

import random


random.seed()
defeat = {'rock': 'scissor', 'paper': 'rock', 'scissor': 'paper'}


def ask_user():
    while True:
        user_choice = input('Say: ')
        if user_choice in defeat:
            return user_choice


def play():
    my_choice = random.choice(defeat)
    user_choice = ask_user()
    if user_choice == my_choice:
        print('DRAW!')
    elif user_choice == defeat[my_choice]:
        print('LOSER!')
    else:
        print('I HATE YOU.')
    print('I had chosen %s.' % my_choice)


if __name__ == '__main__':
    play()

Maybe random.seed() should be put under "if main".