listA = [item1, item2, item3]
if item4 in listA:
print('yes, item4 is in the list')
else:
print('no, item4 is not in the list')
'''
check if element NOT exist in list using 'in'
'''
if 'time' not in listOfStrings :
print("Yes, 'time' NOT found in List : " , listOfStrings)
element_you_want_to_find in list_in_you_want_to_search
Note: Don't forget to substitute both of that variables with the variables you want
Conclusion: Use the in operator
'''
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"