



def     __lowercase(	UpperCAmelCase__ ):


      """simple docstring"""



      lowerCamelCase								=		""
      for ch in key:
            if ch == " " or ch not in key_no_dups and ch.isalpha():
                  key_no_dups += ch
      return key_no_dups

def     __lowercase(	UpperCAmelCase__ ):


      """simple docstring"""



      lowerCamelCase								=		[chr(i + 65 ) for i in range(26 )]
      # Remove duplicate characters from key
      lowerCamelCase								=		remove_duplicates(key.upper() )
      lowerCamelCase								=		len(A_ )
      # First fill cipher with key characters
      lowerCamelCase								=		{alphabet[i]: char for i, char in enumerate(A_ )}
      # Then map remaining characters in alphabet to
      # the alphabet from the beginning
      for i in range(len(A_ )   ,   26 ):
            lowerCamelCase								=		alphabet[i - offset]
            # Ensure we are not mapping letters to letters previously mapped
            while char in key:
                  offset -= 1
                  lowerCamelCase								=		alphabet[i - offset]
            lowerCamelCase								=		char
      return cipher_alphabet

def     __lowercase(	UpperCAmelCase__   ,   UpperCAmelCase__ ):


      """simple docstring"""



      return "".join(cipher_map.get(A_   ,   A_ ) for ch in message.upper() )

def     __lowercase(	UpperCAmelCase__   ,   UpperCAmelCase__ ):


      """simple docstring"""



      lowerCamelCase								=		{v: k for k, v in cipher_map.items()}
      return "".join(rev_cipher_map.get(A_   ,   A_ ) for ch in message.upper() )

def     __lowercase(	):


      """simple docstring"""



      lowerCamelCase								=		input("Enter message to encode or decode: " ).strip()
      lowerCamelCase								=		input("Enter keyword: " ).strip()
      lowerCamelCase								=		input("Encipher or decipher? E/D:" ).strip()[0].lower()
      try:
            lowerCamelCase								=		{"e": encipher, "d": decipher}[option]
      except KeyError:
            raise KeyError("invalid input option" )
      lowerCamelCase								=		create_cipher_map(A_ )
      print(func(A_   ,   A_ ) )


if __name__ == "__main__":
    import doctest

    doctest.testmod()
    main()




from math import pi

def     __lowercase(	UpperCAmelCase__   ,   UpperCAmelCase__ ):


      """simple docstring"""



      return 2 * pi * radius * (angle / 360)


if __name__ == "__main__":
     print(arc_length(9_0, 1_0))