`tox` 4+ has incompatible `tox.ini` syntax.
It's impossible to use one `tox.ini` for Pythons < 3.7 and 3.7+.
python --version
python -m pip install --upgrade pip setuptools wheel
pip --version
python --version
python -m pip install --upgrade pip setuptools wheel
pip --version
- pip install --upgrade virtualenv tox
+ pip install --upgrade virtualenv "tox >= 2.0, < 4"
- name: Set TOXENV
run: |
import os, sys
- name: Set TOXENV
run: |
import os, sys
+Version 3.1.0.post4 (2022-12-15)
+
+ Use ``conda`` to install old Python versions.
+
Version 3.1.0.post3 (2022-12-02)
PyPy3.
Version 3.1.0.post3 (2022-12-02)
PyPy3.