how to check list is not empty in python code example

Example 1: check if list is empty python

if len(li) == 0:
    print('the list is empty')

Example 2: empty list check in python

if not a:
  print("List is empty")

Example 3: can python tell if a list is empty

>>> if len(a)==0:
    print ("list is empty")
else:
    print ("list is not empty")