Python program to convert a number entered by the user into its corresponding number in words

Write a program to convert a number entered by the user into its corresponding number in words.

For example, if the input is 876 then the output should be 'Eight Seven Six'.

num = input ("enter a number = ")
dic = { "0" : "zero" , "1":"one " , "2" : "two" , "3" : "three" , "4" : "four" , "5" : "five" , "6" : "six" , "7" : "seven" , "8" : "eight" , "9" : "nine"}
for i in num :
      print( dic[ i ], end = " ")

enter a number = 456

four five six