New program to translate morse code to text and text to morse code!

morse_code_translator.py

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+#Letters
+
+letters = (
+	'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'
+)
+
+#Morse letters
+
+morse_letters = (
+
+	'.-',
+	'-...',
+	'-.-.',
+	'-..',
+	'.',
+	'..-.',
+	'--.',
+	'....',
+	'..',
+	'.---',
+	'-.-',
+	'.-..',
+	'--',
+	'-.',
+	'---',
+	'.--.',
+	'--.-',
+	'.-.',
+	'...',
+	'-',
+	'..-',
+	'...-',
+	'.--',
+	'-..-',
+	'-.--',
+	'--..'
+)
+
+
+def text_to_morse(phrase):
+	'''This function will help us to translate text to morse code'''
+
+	translated_phrase = ''
+
+	for letter in phrase.lower():
+
+		if letter in letters or letter == ' ':
+
+			for i in range(26): #Notice that the letters tuple and morse_letters tuple have same lenght (26)
+
+				if letter == letters[i]:
+					translated_phrase += morse_letters[i] + '/' 
+					break
+
+				elif letter == ' ':
+					translated_phrase += ' /'
+					break
+
+		else:
+
+			translated_phrase += 'invalid_char/' #If the user's input contains an invalid char like spanish letter Ñ 
+
+	return translated_phrase
+
+
+def morse_letter_to_normal_letter(letter):
+
+	translated_letter = ''
+
+	if letter in morse_letters or letter == ' ':
+		for i in range(26):
+			if letter == morse_letters[i]:
+				translated_letter = letters[i]  #In this function we just do basically the same we did in the text_to_morse function
+				break							#But know we translate a morse letter to a normal letter
+
+			elif letter == ' ':
+				translated_letter = ' '
+				break
+	else:
+
+		translated_letter = ' (invalid_char) '
+
+	return translated_letter
+
+
+def morse_to_text(phrase):
+	letter = ''     
+	translated_phrase = ''
+
+	for char in phrase:
+		if char != '/':   	#Notice that Python doesn't know that a morse letter it's a group of . and - That's why we separate letters with /
+			letter += char  #We do that to can append the - and . chars to the letter variable
+
+		elif char == '/': #And when whe find a / we know that there's the end of a letter
+			translated_phrase += morse_letter_to_normal_letter(letter) #So we call our morse_letter_to_normal_letter function and append the returned value to our finall translation
+			letter = '' #And of course we arease the letter variable's content to continue with the next translation
+
+	return translated_phrase 
+
+
+if __name__ == '__main__':
+	print(text_to_morse('Hello World')) #The output will be ...././.-../.-../---/ /.--/---/.-./.-../-../
+	print(text_to_morse('Colombia')) # The output will be -.-./---/.-../---/--/-.../../.-/
+	print(morse_to_text('..-/-./../-/./-../ /.../-/.-/-/./.../ /---/..-./ /.-/--/./.-./../-.-./.-/')) #The output will be united sates of america
+
+