ITERATORS GENERATORS DECORATORS Cheat Sheet by sahusourabh

Looping

Important functions to be implem­ented

__iter__()

__next__()

__iter__() : takes iteratable object like list, tuples

__next­__(): is used to return the next value in iteration

1. Generator generate one element at a time from a sequence.

2. Yield is used to get the value

3 It saves the state not like function where once function is called state will be returned to new call

Compre­hen­sion: all in one go

Generation : one by one ...fast

1. A decorator is a special function which adds some extra functi­onality to an existing function

2. A decorator is a function that accepts a function as a parameter and returns a function.

3. Decorators are useful to perform some additional processing required by a function.

showve­hicle = decor(­sho­wve­hicle) instead of this line, you can use @decor