Here we make the same changes as with encode.py: 1. def decode(message): added to the beginning 2. The code is indented by four spaces 3. return english_message added to the end 4. Call the function

decode.py

letter_to_morse = {
    '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':'--..',
    '0':'-----', '1':'.----', '2':'..---', '3':'...--', '4':'....-',
    '5':'.....', '6':'-....', '7':'--...', '8':'---..', '9':'----.', ' ':'/'
}

# We need to invert the dictionary. This will create a dictionary
# that can go from the morse back to the letter
morse_to_letter = {}
for letter in letter_to_morse:
    morse = letter_to_morse[letter]
    morse_to_letter[morse] = letter

message = "... --- ... / .-- . / .... .- ...- . / .... .. - / .- -. / .. -.-. . -... . .-. --. / .- -. -.. / -. . . -.. / .... . .-.. .--. / --.- ..- .. -.-. -.- .-.. -.--"


def decode(message):
    english = []

    # Now we cannot read by letter. We know that morse letters are
    # separated by a space, so we split the morse string by spaces
    morse_letters = message.split(" ")

    for letter in morse_letters:
        english.append(morse_to_letter[letter])

    # Rejoin, but now we don't need to add any spaces
    english_message = "".join(english)
    
    return english_message


print(decode(message))

Terminal/Command Prompt

python decode.py

sos we have hit an iceberg and need help quickly

Return course