[Tutor] Best Python 3 module to create simple text editor in Windows command prompt?

[boB Stepp]

I wish to create a primitive text editor in Windows 7 command prompt
to enable me to manually enter and solve simple substitution
cryptograms by hand.  I would want the cipher text to be one color and
the plain text in another.  My intent is to set up things this way in
command prompt before creating a more interesting version (with
increased features) in tkinter.  What would be the best Python 3
module to best assist me in controlling the command prompt window
display, font colors, positioning the cursor dynamically, etc.?

TIA!

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boB