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Python generator cheat sheet download

>>> permutations('abc', 2)                   #   a  b  c
[('a', 'b'), ('a', 'c'),                     # a .  x  x
 ('b', 'a'), ('b', 'c'),                     # b x  .  x
 ('c', 'a'), ('c', 'b')]                     # c x  x  .

Source: gto76.github.io

Python generator cheat sheet download

class Person:
    def __init__(self, name, age):
        self.name = name
        self.age  = age

class Employee(Person):
    def __init__(self, name, age, staff_num):
        super().__init__(name, age)
        self.staff_num = staff_num

Source: gto76.github.io

Python generator cheat sheet download

>>> counter = count(10, 2)
>>> next(counter), next(counter), next(counter)
(10, 12, 14)

Source: gto76.github.io

Python generator cheat sheet download

class <name>:
    def __init__(self, a):
        self.a = a
    def __repr__(self):
        class_name = self.__class__.__name__
        return f'{class_name}({self.a!r})'
    def __str__(self):
        return str(self.a)

    @classmethod
    def get_class_name(cls):
        return cls.__name__

Source: gto76.github.io

Python generator cheat sheet download

def get_multiplier(a):
    def out(b):
        return a * b
    return out

Source: gto76.github.io

Python generator cheat sheet download

>>> combinations_with_replacement('abc', 2)  #   a  b  c
[('a', 'a'), ('a', 'b'), ('a', 'c'),         # a x  x  x
 ('b', 'b'), ('b', 'c'),                     # b .  x  x
 ('c', 'c')]                                 # c .  .  x

Source: gto76.github.io

Python generator cheat sheet download

from functools import wraps

def debug(func):
    @wraps(func)
    def out(*args, **kwargs):
        print(func.__name__)
        return func(*args, **kwargs)
    return out

@debug
def add(x, y):
    return x + y

Source: gto76.github.io

Python generator cheat sheet download

>>> multiply_by_3 = get_multiplier(3)
>>> multiply_by_3(10)
30

Source: gto76.github.io

Python generator cheat sheet download

@decorator_name
def function_that_gets_passed_to_decorator():
    ...

Source: gto76.github.io

Python generator cheat sheet download

out = [i+j for i in range(10) for j in range(10)]

Source: gto76.github.io

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