Aim:

☛   Write a python code to read dictionary values from the user. Construct a function to invert its content. i.e., keys should be values and values should be keys.

Solution :

PROGRAM: (invert_dictionary.py)

 
import ast
def swap_dict(old_dict):
	return { value : key for key , value in old_dict.items () }
old_dict = input(" Please enter a dictionary : \n ")
old_dict = ast.literal_eval(old_dict)
# Printing original dictionary
print(" Original dictionary is : \n " , old_dict)
print()
new_dict = swap_dict(old_dict)
# Printing new dictionary
print(" New dictionary is : \n " , new_dict)

OUTPUT:

 
 Please enter a dictionary :
 { 'A' : 65 , 'B' : 66 , 'C' : 67 , 'D' : 68 , 'E' : 69 , 'F' : 70 , 'G' : 71 , 'H' : 72 }
 Original dictionary is :
  {'A': 65, 'B': 66, 'C': 67, 'D': 68, 'E': 69, 'F': 70, 'G': 71, 'H': 72}

 New dictionary is :
  {65: 'A', 66: 'B', 67: 'C', 68: 'D', 69: 'E', 70: 'F', 71: 'G', 72: 'H'}