我今天将python版本从3.6.4更新到3.6.5。这是因为，在分发到 Heroku 的过程中，它建议使用 3.6.5 版本。因此，确认了以下电源外壳内容。
Writing objects: 100% (35/35), 11.68 KiB | 0 bytes/s, done.
Total 35 (delta 3), reused 0 (delta 0)
remote: Compressing source files... done.
remote: -----> Python app detected
remote: ! The latest version of Python 3 is python-3.6.5 (you are using ÿþpython-3.6.5, which is unsupported).
remote: ! We recommend upgrading by specifying the latest version (python-3.6.5).
remote: Learn More: https://devcenter.heroku.com/articles/python-runtimes
remote: -----> Installing ÿþpython-3.6.5
remote: ! Requested runtime (ÿþpython-3.6.5) is not available for this stack …