TclError: no display name and no $DISPLAY environment variable in google's colab

Question

This error:

TclError: no display name and no $DISPLAY environment variable

arose when I tried to run a Python 3.6 program inside google\'s

Answer 1

The problem is the tkinter that you are trying to use.

Tk will normally create GUI (like a new window) for your interface. But Colab is run on the web server in the cloud. It can't open a window on your machine. You can only interact with it through notebook interface.

You need to limit the interaction not to use GUI. Or change them to web-based through notebook. What kind of program are you trying to run?