test task 4 | Python Fiddle

from typing import List

def combinations_with_repeat(weights: List[float], weight) -> int:
    # Здесь предполагается, что мы можем брать несколько грузиков одного веса.
    
    if not (weights and weight):
        return 0
    
    n = 0
    weights_sorted = sorted(weights, reverse=True)
    
    w = weights_sorted[0]
    if w > weight:
        return combinations(weights_sorted[1:], weight)
    
    n_w_max = int(weight / w)
    if not weight/w - n_w_max:
        n += 1
    for i in range(n_w_max+1):
        n += combinations(weights_sorted[1:], weight - i*w)
    return n

def combinations_without_repeat(weights: List[float], weight: float) -> int:
    # Здесь предполагается, что мы можем использовать каждый грузик только один раз
    
    if not (weights and weight):
        return 0

weights_sorted = sorted(weights, reverse=True)
    if weights_sorted[0] > weight:
        return combinations_without_repeat(weights_sorted[1:], weight)

n = 0
    if weights_sorted[0] == weight:
        n += 1

for i in range(2):
        n += combinations_without_repeat(weights_sorted[1:], weight - i*weights_sorted[0])

return n

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