Question: 
Write a function to choose specified number of colours from three different colours and generate all the combinations with repetitions.


Model's Code:
def combinations_colors(colors, n):
    if n == 0:
        return [()]
    if not colors:
        return []
    
    result = []
    def generate_combination(current_combination, start):
        if len(current_combination) == n:
            result.append(tuple(current_combination))
            return
        for i in range(start, len(colors)):
            current_combination.append(colors[i])
            generate_combination(current_combination, i)
            current_combination.pop()
    
    generate_combination([], 0)
    return result



Sample Correct Code:
from itertools import combinations_with_replacement 
def combinations_colors(l, n):
    return list(combinations_with_replacement(l,n))


Asserts:
assert combinations_colors( ["Red","Green","Blue"],1)==[('Red',), ('Green',), ('Blue',)]
assert combinations_colors( ["Red","Green","Blue"],2)==[('Red', 'Red'), ('Red', 'Green'), ('Red', 'Blue'), ('Green', 'Green'), ('Green', 'Blue'), ('Blue', 'Blue')]
assert combinations_colors( ["Red","Green","Blue"],3)==[('Red', 'Red', 'Red'), ('Red', 'Red', 'Green'), ('Red', 'Red', 'Blue'), ('Red', 'Green', 'Green'), ('Red', 'Green', 'Blue'), ('Red', 'Blue', 'Blue'), ('Green', 'Green', 'Green'), ('Green', 'Green', 'Blue'), ('Green', 'Blue', 'Blue'), ('Blue', 'Blue', 'Blue')]


Tests:
Test 1 of 3: PASS
Test 2 of 3: PASS
Test 3 of 3: PASS

Test 255 of 974: 182/255 (71.37254901960785%): success