Pyinstaller Error: ModuleNotFoundError: No module named 'pkg_resources.py2_warn' for Python 3.7

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Using Pyinstaller on Python 3.7 with setuptools around ver 45.0.0 produces the error

ModuleNotFoundError: No module named 'pkg_resources.py2_warn' [24514] Failed to execute script pyi_rth_pkgres

This discussion describes it as being caused by the setuptools update around 45.0.0

pyinstaller setuptools python
1 Answers

This was fixed in the 49.1.1 version of setuptools released a week ago on 7/10/2020. So, upgrading setuptools now fixes the issue. The previous workaround was to downgrade setuptools.

For Win10:

pip install setuptools --upgrade
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