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59 lines
1.7 KiB
Python
59 lines
1.7 KiB
Python
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#!/usr/bin/env python3
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"""
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Python program to translate to and from Morse code.
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https://en.wikipedia.org/wiki/Morse_code
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"""
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# fmt: off
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MORSE_CODE_DICT = {
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"A": ".-", "B": "-...", "C": "-.-.", "D": "-..", "E": ".", "F": "..-.", "G": "--.",
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"H": "....", "I": "..", "J": ".---", "K": "-.-", "L": ".-..", "M": "--", "N": "-.",
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"O": "---", "P": ".--.", "Q": "--.-", "R": ".-.", "S": "...", "T": "-", "U": "..-",
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"V": "...-", "W": ".--", "X": "-..-", "Y": "-.--", "Z": "--..", "1": ".----",
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"2": "..---", "3": "...--", "4": "....-", "5": ".....", "6": "-....", "7": "--...",
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"8": "---..", "9": "----.", "0": "-----", "&": ".-...", "@": ".--.-.",
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":": "---...", ",": "--..--", ".": ".-.-.-", "'": ".----.", '"': ".-..-.",
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"?": "..--..", "/": "-..-.", "=": "-...-", "+": ".-.-.", "-": "-....-",
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"(": "-.--.", ")": "-.--.-", "!": "-.-.--", " ": "/"
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} # Exclamation mark is not in ITU-R recommendation
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# fmt: on
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REVERSE_DICT = {value: key for key, value in MORSE_CODE_DICT.items()}
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def encrypt(message: str) -> str:
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"""
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>>> encrypt("Sos!")
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'... --- ... -.-.--'
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>>> encrypt("SOS!") == encrypt("sos!")
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True
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"""
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return " ".join(MORSE_CODE_DICT[char] for char in message.upper())
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def decrypt(message: str) -> str:
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"""
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>>> decrypt('... --- ... -.-.--')
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'SOS!'
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"""
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return "".join(REVERSE_DICT[char] for char in message.split())
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def main() -> None:
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"""
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>>> s = "".join(MORSE_CODE_DICT)
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>>> decrypt(encrypt(s)) == s
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True
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"""
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message = "Morse code here!"
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print(message)
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message = encrypt(message)
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print(message)
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message = decrypt(message)
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print(message)
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if __name__ == "__main__":
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main()
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