Use Python 3.9 as the default Python version for new apps#1187
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schneems
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Apr 1, 2021
Previously if a new app did not specify a Python version via a `runtime.txt` or the appropriate `Pipfile` config option, then the buildpack would default to Python 3.6.13. Now the buildpack will use Python 3.9.2. This does not affect: * apps that specify an explicit Python version * existing apps that have already had a build using the previous default version (since that version is remembered from one build to the next, via the "sticky versions" feature). Use-cases involving new apps that aren't compatible with Python 3.9 will now need to specify Python 3.6 explicitly: https://devcenter.heroku.com/articles/python-support#specifying-a-python-version Closes GUS-W-7686321.
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Previously if a new app did not specify a Python version via a
runtime.txtor the appropriatePipfileconfig option, then the buildpack would default to Python 3.6.13.Now the buildpack will use Python 3.9.2.
This does not affect:
Use-cases involving new apps that aren't compatible with Python 3.9 will now need to specify Python 3.6 explicitly:
https://devcenter.heroku.com/articles/python-support#specifying-a-python-version
Closes GUS-W-7686321.