how to check if an item is in a list in python code example

Example 1: how to check if value is in list python

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

Example 2: python find if part of list is in list

'''    
    check if list1 contains all elements in list2
'''
result =  all(elem in list1  for elem in list2)
if result:
    print("Yes, list1 contains all elements in list2")    
else :
    print("No, list1 does not contains all elements in list2"