Generators are faster than list comprehension - Python

Generators are faster than list comprehension

import timeit
def test_plainlist(plain_list):
    for i in plain_list():
        pass


def test_listcompr(listcompr):
    for i in listcompr():
        pass


def test_generator(generator):
    for i in generator():
        pass


def test_generator_yield(generator_yield):
    for i in generator_yield():
        pass
print('plain_list:     ', end='')
%timeit test_plainlist(plainlist)
print('\nlistcompr:     ', end='')
%timeit test_listcompr(listcompr)
print('\ngenerator:     ', end='')
%timeit test_generator(generator)
print('\ngenerator_yield:     ', end='')
%timeit test_generator_yield(generator_yield)

Public vs. private class methods and name mangling

    def public_method(self):
        print('Hello public world!')

    def __private_method(self):
        print('Hello private world!')

    def call_private_method_in_class(self):
        self.__private_method()


my_instance = my_class()

my_instance.public_method()
my_instance._my_class__private_method()
my_instance.call_private_method_in_class()

The consequences of modifying a list when looping through it

a = [1, 2, 3, 4, 5]
for i in a:
    if not i % 2:
        a.remove(i)
print(a)
b = [2, 4, 5, 6]
for i in b:
     if not i % 2:
         b.remove(i)
print(b)