Bug report

Bug summary

Python crashes when I create and then close figures in afor loop using the TkAgg backend on Mac OS X in an interactive session. The Python session crashes out with

called Tcl_FindHashEntry on deleted tableAbort trap: 6

This may be related to#7743 and#8387.

Code for reproduction

importsysimportmatplotlibasmplimportpylabaspltprint('OS: %s'%sys.platform)print('matplotlib version: %s'%mpl.__version__)print('Backend: %s'%matplotlib.get_backend())foriinrange(3):plt.figure()plt.close()plt.figure()plt.plot([0,1],[0,1])plt.show()

Actual outcome

$ python -i figure_close.pyOS: darwinmatplotlib version: 2.0.2Backend: TkAggcalled Tcl_FindHashEntry on deleted tableAbort trap: 6

Expected outcome

I would expect this code to create and destroy three figures before creating and retaining the last figure.

Matplotlib version

• Operating system: Mac OS X 10.12.1
• Matplotlib version: 2.0.2
• Matplotlib backend (print(matplotlib.get_backend())): TkAgg
• Python version: 2.7.13

This was matplotlib installed from conda from theconda-forge channel.