Monty Hall problem outcome simulator

monty_hall.py

import random


# probability calculator
def monty():

    runs = 5000
    true_switch_win_counter = 0
    false_switch_win_counter = 0
    true_switch_counter_total = 0
    false_switch_counter_total = 0
    for i in range(runs):
        print('____________________\nBegin for loop #{}\n'.format(i+1))
        doors = ['1', '2', '3']
        initial_pick = random.choice(doors)
        winning_door = random.choice(doors)
        print('Doors: {}'.format(doors))
        print('Initial pick: {}'.format(initial_pick))
        print('Winning door: {}\n'.format(winning_door))

        # switcher
        if i % 2:
            true_switch_counter_total += 1
            print('Switch True')
            second_pick = 0
            if winning_door == initial_pick:
                # guaranteed loss
                print('Winning door: {} == Intial pick: {}'
                      .format(winning_door, initial_pick))
                print('Lose. Switched from correct initial pick')
            else:
                # guaranteed win
                print('Winning door: {} != Intial pick: {}'
                      .format(winning_door, initial_pick))
                print('Win. Switched from incorect initial pick.')
                true_switch_win_counter += 1
        else:
            false_switch_counter_total += 1
            print('Switch False')
            if initial_pick == winning_door:
                print('Initial pick: {} == Winning door: {}'
                      .format(initial_pick, winning_door))
                print('Win. Not switched.')
                false_switch_win_counter += 1
            else:
                print('Initial pick: {} != Winning door: {}'
                      .format(initial_pick, winning_door))
                print('Lose. Not switched.')
        print('\nEnd for loop #{}\n--------------------\n'.format(i+1))

    print('Wins with switch:\t{:.3f}%'
          .format(true_switch_win_counter / true_switch_counter_total * 100))
    print('Wins without switch:\t{:.3f}%'
          .format(false_switch_win_counter / false_switch_counter_total * 100))
    print('true_switch_win_counter: {} / true_switch_counter_total: {}'
          .format(true_switch_win_counter, true_switch_counter_total))
    print('false_switch_win_counter: {} / false_switch_counter_total: {}'
          .format(false_switch_win_counter, false_switch_counter_total))

if __name__ == "__main__":
    # run function on startup
    monty()