Created
March 8, 2020 22:52
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A simulation of a coin-flipping game
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| import random | |
| def play(bankroll, wager_perc, prob_win, payout_perc, num_turns, seed): | |
| """ Plays a coin flipping game and returns the final balance | |
| Inputs: | |
| start (number): starting bankroll | |
| wager_perc (number): percent of bankroll you want to wager at each turn | |
| prob_win (number): probability of a win (e.g. 0.5 is 50% win probability) | |
| payout_perc (number): the payout multiple in case of win (payout = payout_perc * wager) | |
| num_turns (number): the number of turns in the game | |
| seed (number): seed for random number generator | |
| Output: | |
| balance (number): the ending balance of the game | |
| Example: | |
| # flip a fair coin 100 times and wager 1% of the bankroll on each flip | |
| play(bankroll = 100, wager_perc = 0.01, prob_win = 0.5, payout_perc = 1, num_turns = 10, seed = 42) | |
| 97.9708 | |
| """ | |
| random.seed(seed) | |
| bal = bankroll | |
| for _ in range(num_turns): | |
| wager = wager_perc * bal | |
| r = random.random() | |
| if r > prob_win: | |
| payout = payout_perc * wager | |
| else: | |
| payout = -wager | |
| bal += payout | |
| return bal |
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