ecsm3-1-12.py

"""

12.Write a program that accepts a sequence of whitespace separated words as input
and prints the words after removing all duplicate words and sorting them
alphanumerically.
Suppose the following input is supplied to the program:
 hello world and practice makes perfect and hello world again
 Then, the output should be:
 again and hello makes perfect practice world

"""

ch = input("how are you feeling today : ")
sch = sorted(ch.split())
print(' '.join (dict.fromkeys(sch)))