How to use 'how to make games in python' in Python

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def game(player_choice):
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    print()
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    name = player_choice
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    print(name)
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    number = name_to_number(name)
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    comp_number = random.randrange(0, 2)
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    comp_choice = number_to_name(comp_number)
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    print(comp_choice)
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    comp = -int(comp_number)
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    play = int(number)
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    diff = (comp + play) % 5
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    if diff == 1 or diff == 3:
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        print("you won!!!")
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    elif diff == 0:
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        print("draw")
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    elif diff == 2 or diff == 4:
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        print("you lose!!!")