Question

How is lambda() used with map() in python? Also, it would be nice if you gave me an example. Thanks you

Answer 1

The map() function in Python takes in a function and a list as an argument. The function is called with a lambda function and a list and a new list is returned which contains all the lambda modified items returned by that function for each item. 

Example:

# Python code to illustrate 
# map() with lambda() 
# to get double of a list. 
li = [5, 7, 22, 97, 54, 62, 77, 23, 73, 61] 
final_list = list(map(lambda x: x*2 , li)) 
print(final_list) 

Output:

[10, 14, 44, 194, 108, 124, 154, 46, 146, 122]