Lambda expression for Python3

1. anonymous function

The general cock-silk function is defined like this

def DS (x):     return 2*x+1

And the anonymous function is like this.

Lambda x:2*x+1

Benefits of using Anonymous functions

1, can make the function more concise

2, no need to consider naming, do not have the name of the child racked up ha ha ha haha

3, simplify the code, improve the readability of the Code

2, two commonly used built-in functions 1) filter (parameter 1, parameter 2) parameter 2 with in Parameter 1 is calculated if the true final return output is true for the collection

Use lambda expressions and filter () to find a multiple of 3 within 100

List (filter (lambdanot (n%3), range (1, 100)))

Use the list deduction to replace the problem

 for inch if  not (i%3)]

2, Map (parameter 1, parameter 2) parameter two generation into parameter 1 calculates the collection of the returned calculated value

Analog zip () packages two sequences into elements as list form

>>> list (map (lambda x, y: [x, Y], [1, 3, 5, 7, 9], [2, 4, 6, 8,])) [[1, 2], [3, 4], [5, 6], [7, 8], [9, 10]]

Lambda expression for Python3