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Title: Handle 'TclError: image "pyimage7" doesn't exist' errors in Python with JupyterLab or JupyterNotebook
Sometimes when you try to run a program in JupyterLab or JupyterNotebook, you may get an error that leaves the IDE in a weird state. In that case, the next time you try to run the program you may get a mysterious error similar to the following. TclError: image "pyimage7" doesn't exist The solution is to restart the kernel and run the progam's cells again by opening the Run menu and selecting Restart Kernel and Run All Cells. That should clear up the weird state so the program can run normally, or at least run until you find some other bug.In fact, if you encounter any error message that doesn't seem to apply to your code, try restarting the kernel. You may have found an error that you haven't seen before, but sometimes restarting the kernel will fix a similar weird state problem when you might otherwise spend a long time looking for a bug in the code when there isn't one. |
