Break export() into sub-parts

[pronojitsaha]

Implements the final part of #44 i.e. 'Replace the function calls with their corresponding Python code'

[rhiever]

It looks like the build for Python 3 is failing. Maybe something to do with the new module?

Also, perhaps we should rename tpot_export.py to export_utils.py and move all of the export-related functions there (except for export(), of course).

[pronojitsaha]

Yes I saw that too, the error is in importing the new module. ERROR: Failure: ImportError (No module named 'tpot_export'). In my local machine it runs perfectly. Can you run the build once again and check?

Else will check this over the weekend. Renaming to export_utils.py is a good idea. 👍 Will implement that too.

And lastly but most importantly, Merry Christmas 🎄 to you and also to @rasbt and everyone else!

[rhiever]

I think you need to change:

from tpot_export import ...

to

from .tpot_export import ...

to clarify that it's a local import.

Merry Christmas all! 🎅

[pronojitsaha]

@rhiever Thanks for the tip! I think this looks good now. Let me know.