list python how to check if in a list code example

Example 1: check if list of list python

for item in list_of_lists:
      isinstance(item, list)

Example 2: how to check if any item in list is in anoter list

# checking all elements of list_B in list_A
list_A = [1, 2, 3, 4]
list_B = [2, 3]

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

print(check)
# True