This question already has answers here: How to get the cartesian product of multiple lists (17 answers) Closed 11 months ago. Cartesian product of two lists in python Expected Output: Answer Do a list comprehension, iterate over both the lists and add the strings, like

Cartesian product of two lists in python [duplicate]

Cartesian product of two lists in python

list1 = ['a', 'b']
list2 = [1, 2, 3, 4, 5]

JavaScript
​x
 
list1 = ['a', 'b']
list2 = [1, 2, 3, 4, 5]
​

Expected Output:

list3 = ['a1', 'a2', 'a3', 'a4', 'a5', 'b1', 'b2', 'b3', 'b4', 'b5']

JavaScript
 
list3 = ['a1', 'a2', 'a3', 'a4', 'a5', 'b1', 'b2', 'b3', 'b4', 'b5']
​

Do a list comprehension, iterate over both the lists and add the strings, like

list3 = [i+str(j) for i in list1 for j in list2]

JavaScript
 
list3 = [i+str(j) for i in list1 for j in list2]
​