python check if list contains only a single repeated element code example

Example 1: python how to check if all elements in list are the same

List = ['Mon','Mon','Mon','Mon']
// Result from count matches with result from len()
result = List.count(List[0]) == len(List)
if (result):
   print("All the elements are Equal")
else:
   print("Elements are not equal")

Example 2: how to check if there are duplicates in a list python

>>> your_list = ['one', 'two', 'one']
>>> len(your_list) != len(set(your_list))
True