What to do Next

After the code is working, what to do next.

• Remove redundant code. There is a lot of redundant/useless code in the python files (*.py). It is there because I did a lot of tinkering with code while figuring out what I wanted to do. As an example, with a little re-structuring multiple global variables could be eliminated.
• Cleanup/re-structure the code. For example,
  • Eliminate the EnigmaRotor class?
  • Move more functionality into the EnigmaRotor class?
  • Add help information to the GUI?
  • Make a better GUI
  • Create documentation. (Use Pydoc for the Python class interface?)
  • Currently rotor lists contain absolute index values. Change them to relative index values. (Relative to the current index +N or – N?) Also use pop/append to rotate a rotor (list)?
    For example: next_rotor_idx = (current_rotor_idx + list[current_rotor_idx]) % list_length
• Create a program to encrypt/decrypt a file. What do you do with characters not in the alphabet? New-line? Carriage-return?
• Create an expanded alphabet. For example, add the characters ' ', '\n', '\r', and others. (perhaps lowercase?)
  (remember there must be a even number of characters in the alphabet.)
• Create a software enigma machine that allow a character to substitute itself. (Bypass the hardware limitation.)
• Output Morse code? Input Morse code? (What is a Numbers Station?)
• Create a GUI that somehow simulates "lighting a lamps". (Actual hardware light bulbs? Seven segment display?)
• Create an Enigma Machine that can encrypt/decrypt binary files/data. (split bytes into nibbles? base64 binary-to-text encoding?)