from datetime import datetime


# Без использования декоратора
# def calculate(start, end):
#     start_time = datetime.now()
#     sum_var = 1
#     temp = 0
#     for i in range(start, end):
#         sum_var += i
#         for i in range(1, i):
#             temp += i*2
#     print(datetime.now() - start_time)
#     return sum_var


def compute_time(func):
    def wrapper(*args):
        s_time = datetime.now()
        result = func(*args)
        print(datetime.now() - s_time)
        return result
    return wrapper

# def Название декоратора(func):
#     def wrapper(*args):
#         какой-то код
#         result = func(*args)
#         какой-то код
#         return result
#     return wrapper


@compute_time
def calculate(start, end):
    sum_var = 1
    temp = 0
    for i in range(start, end):
        sum_var += i
        for i in range(1, i):
            temp += i * 2
    return sum_var


print(calculate(1, 10000))