how to find size of List[List[int]] in python code example

Example 1: python list length

# example of len() function

list_number = [6, 3, 8, 0]

length = len(list_number)
print("The lentgh of the list is: " + str(length))

Example 2: list length in python

list1 = [1,2,3]
print(len(list))