how to take list of list input in python code example

Example 1: get list input from user in python

a = list(map(int,input("\nEnter the numbers : ").strip().split()))

Example 2: how to get input from list in python

input_string = input("Enter a list element separated by space ")
list  = input_string.split()
print("Calculating sum of element of input list")
sum = 0
for num in list:
    sum += int (num)
print("Sum = ",sum)