GRADE 12 : PRACTICAL 4 : MODULES

 '''LAB 4 : WAP to accept a text from the user and perform encryption

and decryption on it using modules. The module should contain functions

that encrypt and decrypt the text, that take the text and key as parameters''' 

cipher.py

'''Module to encrypt and decrypt a code '''

#CONSTANT

KEY='ac!if@me#o$'

def encrypt(x,k=KEY):

    '''Function that accepts a message,a default arg k,

and returns the encrypted message'''

    return k.join(x)

def decrypt(x,k =KEY):

    '''Function that accepts an encrypted message , a default

argument k, and returns the decrypted message'''

    l=x.split(k)

    s=''.join(l)    

    return s

prog4.py 

import cipher

text = input("Enter the text that you want to encrypt : ")

key=input("Enter the key : ")

ec = cipher.encrypt(text,key)

print('original text : ',text)

print('encrypted text : ', ec)

dc = cipher.decrypt(ec,key)

print('decrypted text : ', dc)