There are projects doing lo-fi displays, if a 7" LCD display is too high rez for you I suppose.

https://www.kickstarter.com/projects/tidbyt/retro-display

The tidbyt display size is perfect! I don’t need the rest of their system just want to drive exactly that type of display directly from a python or C program.

Perhaps the display is solve separately somewhere.

Try Adafruit. They'll have everything you need and instructions on how to do it.

https://www.adafruit.com/product/4745