It’s about 2 hours trying to solve the problem but i can’t.
can anyone please tell me whats the problem of the code that i can’t pass this?
(I can’t solve test 3)
Your code so far
import copy
import random
# Consider using the modules imported above.
class Hat:
def __init__(self, **kwargs):
self.contents = [k for k, v in kwargs.items() for _ in range(v)]
def draw(self, n):
n = min(n, len(self.contents))
return [self.contents.pop(random.randrange(len(self.contents))) for _ in range(n)]
def experiment(hat, expected_balls, num_balls_drawn, num_experiments):
m = 0
for _ in range(num_experiments):
another_hat = copy.deepcopy(hat)
balls_drawn = another_hat.draw(num_balls_drawn)
balls_req = sum([1 for k, v in expected_balls.items() if balls_drawn.count(k) >= v])
m += 1 if balls_req == len(expected_balls) else 0
return m / num_experiments
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Challenge Information:
Build a Probability Calculator Project - Build a Probability Calculator Project
If the number of balls to draw exceeds the available quantity, return all the balls.
This is interesting I think the test could be improved here. I think you are failing because the function returns the balls in a different order than the original contents. I believe the test expects you to just return the contents unchanged in this case.
Although it doesn’t say “return the balls in a random order” you are still returning all of them
i change my code but it still has the same problem.
I’m just really confused.
here is the new code:
import copy
import random
class Hat:
def __init__(self, **kwargs):
# Initialize the contents of the hat
self.contents = [k for k, v in kwargs.items() for _ in range(v)]
def draw(self, n):
# If n is greater than the total number of balls, return all the balls
if n >= len(self.contents):
return self.contents[:]
# Otherwise, randomly remove n balls from the hat
return [self.contents.pop(random.randrange(len(self.contents))) for _ in range(n)]
def experiment(hat, expected_balls, num_balls_drawn, num_experiments):
m = 0
for _ in range(num_experiments):
# Deep copy of the hat to simulate an independent experiment
another_hat = copy.deepcopy(hat)
# Draw balls from the hat
balls_drawn = another_hat.draw(num_balls_drawn)
# Check if the drawn balls meet the expected ball counts
balls_req = sum([1 for k, v in expected_balls.items() if balls_drawn.count(k) >= v])
# Increment m if all expected balls are found
m += 1 if balls_req == len(expected_balls) else 0
# Return the probability
return m / num_experiments
I’ve edited your code for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.
You can also use the “preformatted text” tool in the editor (</>) to add backticks around text.
you are still returning all of them