how to get ordered set in python code example

Example 1: orderd set in python

pip install ordered-set
from ordered_set import OrderedSet
letters = OrderedSet('abracadabra')
print(letters) # {'a', 'b', 'r', 'c', 'd'}

Example 2: are sets ordered in python

try:
  a = {'a', 'b'}
  print(a[0])
except:
  print("Set are not ordered")