Python: Count number of lists in a given list of lists

Python List: Exercise - 90 with Solution

Write a Python program to count the number of lists in a given list of lists.

Sample Solution:

Python Code:

def count_list(input_list): 
    return len(input_list) 
      
list1 = [[1, 3], [5, 7], [9, 11], [13, 15, 17]] 
list2 = [[2, 4], [[6,8], [4,5,8]], [10, 12, 14]]   
print("Original list:")
print(list1)
print("\nNumber of lists in said list of lists:")
print(count_list(list1))
print("\nOriginal list:")
print(list2)
print("\nNumber of lists in said list of lists:")
print(count_list(list2))

Sample Output:

Original list:
[[1, 3], [5, 7], [9, 11], [13, 15, 17]]

Number of lists in said list of lists:
4

Original list:
[[2, 4], [[6, 8], [4, 5, 8]], [10, 12, 14]]

Number of lists in said list of lists:
3

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