python if list code example

Example 1: check if list of list python

for item in list_of_lists:
      isinstance(item, list)

Example 2: Check if element in list Python

listA = [item1, item2, item3]
if item4 in listA:
  print('yes, item4 is in the list')
else:
  print('no, item4 is not in the list')

Example 3: how to check if value is in list python

>>> letters = [a,b,c,d,e]
>>> 'a' in letters:
True

Example 4: can python tell if a list is empty

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