Arda, I’ve found out after trial and error that pyinstaller has a conflict with the latest version of matplotlib. In order to produce an executable of your script with pyinstaller you should downgrade matplotlib to 3.2.2 version. I have also found some problems with the latest (1.19.4) version of numpy which went away when I downgraded numpy to 1.19.3.

You can check my repository where I created a simple script to plot COVID19 global data using matplotlib package. After many failed attempts I was also able to create an executable version of it as I described above (see also the of that repository).

CLICK HERE to find out more related problems solutions.

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