how to tell if a list contains a list python code example

Example 1: check if a list contains an item from another list python

## checking any elment of list_B in list_A
list_A = [1, 2, 3, 4]

list_B = [2, 3, 6]

check = any(item in list_A for item in list_B)

print(check)
# True

Example 2: check if list of list python

for item in list_of_lists:
      isinstance(item, list)