Simple implementation of a program to explain the birthday paradox

birthday_paradox.py

from tqdm import trange
from time import sleep
import random 

def main():
    n_people = int(input())
    iterations = int(input())
    print("\n\n\n")
    matches = 0
    for _ in trange(iterations):
        sleep(0.1)
        generated_bdays = []
        for _ in range(n_people):
            month = random.randint(1,12)
            max_day = 30 if month in [4,6,9,11] else 31
            if month == 2:
                max_day = 28
            day = random.randint(1,max_day)
            bday = str(day) + "/" + str(month)
            if bday in generated_bdays:
                matches = matches + 1
                break
            else:
                generated_bdays.append(bday)
    print("\nResult: " + str(matches) + "/" + str(iterations))


main()