Scientific Computing with Python Projects - Probability Calculator

Tell us what’s happening:

Hello! I am having trouble with the Probability Calculator task. I have passed the first 3 tests, but the 4th isn’t passing. I have debugged as many special cases and scenarios that I can think of, but the probability output is correct. Am I missing something? Thanks.

Your code so far

import copy
import random

class Hat:
    def __init__(self, **color_ball_amount):
        self.contents = []
        balls_dict = color_ball_amount
        for color in balls_dict:
            for i in range(0, balls_dict[color]):

    def draw(self, num_to_draw):
        if num_to_draw >= len(self.contents):
            temp = self.contents
            self.contents = []
            return temp
        random_list = []
        for i in range(0, num_to_draw):
            index = int(random.random() * len(self.contents))
        return random_list

def experiment(hat, expected_balls, num_balls_drawn, num_experiments):
    n = num_experiments
    m_value = 0
    check_list = []
    for color in expected_balls:
        for i in range(0, expected_balls[color]):

     for i in range(0, n):
        eHat = copy.deepcopy(hat)
        draw = eHat.draw(num_balls_drawn)

        status = 0
        for item in check_list:
            if item in draw:
                status = 1
                status = 0
        m_value += status

    return m_value / n

hat = Hat(black=6, red=4, green=3)

probability = experiment(hat=hat, 
                    expected_balls={"red":2, "green":1},


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Challenge Information:

Scientific Computing with Python Projects - Probability Calculator

The problem seems to be caused by specific way of using random module. Try using randint or randrange method from random module, for selecting the drawn ball.

Thank you so much. Randint worked!