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Morse.py
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Morse.py
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#!/usr/bin/python3
# Dictionary representing the morse code chart
MORSE_CODE_DICT = { 'A':'.-', 'B':'-...',
'C':'-.-.', 'D':'-..', 'E':'.',
'F':'..-.', 'G':'--.', 'H':'....',
'I':'..', 'J':'.---', 'K':'-.-',
'L':'.-..', 'M':'--', 'N':'-.',
'O':'---', 'P':'.--.', 'Q':'--.-',
'R':'.-.', 'S':'...', 'T':'-',
'U':'..-', 'V':'...-', 'W':'.--',
'X':'-..-', 'Y':'-.--', 'Z':'--..',
'1':'.----', '2':'..---', '3':'...--',
'4':'....-', '5':'.....', '6':'-....',
'7':'--...', '8':'---..', '9':'----.',
'0':'-----'}
enc = input('Please Make Your Selection (0 = Encode, 1 = Decode): ')
encVar = int(enc)
message = input('Please Enter the String you wish to Encode/Decode: ')
# Function to encrypt the string
# according to the morse code chart
def encrypt(message):
cipher = ''
for letter in message:
if letter != ' ':
# Looks up the dictionary and adds the
# correspponding morse code
# along with a space to separate
# morse codes for different characters
cipher += MORSE_CODE_DICT[letter] + ' '
else:
# 1 space indicates different characters
# and 2 indicates different words
cipher += ' '
return cipher
# Function to decrypt the string
# from morse to english
def decrypt(message):
# extra space added at the end to access the
# last morse code
message += ' '
decipher = ''
citext = ''
for letter in message:
# checks for space
if (letter != ' '):
# counter to keep track of space
i = 0
# storing morse code of a single character
citext += letter
# in case of space
else:
# if i = 1 that indicates a new character
i += 1
# if i = 2 that indicates a new word
if i == 2 :
# adding space to separate words
decipher += ' '
else:
# accessing the keys using their values (reverse of encryption)
decipher += list(MORSE_CODE_DICT.keys())[list(MORSE_CODE_DICT
.values()).index(citext)]
citext = ''
return decipher
# Hard-coded driver function to run the program
def main():
if encVar > 0:
result = decrypt(message.upper())
print ('Encoded Message :',result)
else:
result = encrypt(message.upper())
print ('Decoded Message :',result)
# Executes the main function
if __name__ == '__main__':
main()