python.py

from collections import deque


def cache(function):
    cached_values = {}  # Contains already computed values

    def wrapping_function(*args):
        if args not in cached_values:
            # Call the function only if we haven't already done it for those parameters
            cached_values[args] = function(*args)
        return cached_values[args]
    return wrapping_function


@cache
def fibonacci(n):
    print('calling fibonacci(%d)' % n)
    if n < 2:
        return n
    return fibonacci(n-1) + fibonacci(n-2)


print([fibonacci(n) for n in range(1, 9)])


class SomeClass:
    def create_arr(self):  # An instance method
        self.arr = []

    def insert_to_arr(self, value):  # An instance method
        self.arr.append(value)

    @classmethod
    def class_method(cls):
        print("the class method was called")