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116 lines
4.3 KiB
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[#]: subject: (Python 3.10 beta in Fedora Linux)
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[#]: via: (https://fedoramagazine.org/python-3-10-beta-in-fedora-linux/)
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[#]: author: (Miro Hrončok https://fedoramagazine.org/author/churchyard/)
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[#]: collector: (lujun9972)
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[#]: translator: (geekpi)
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[#]: reviewer: (wxy)
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[#]: publisher: (wxy)
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[#]: url: (https://linux.cn/article-13536-1.html)
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Fedora Linux 中的 Python 3.10 测试版
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======
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![][1]
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Python 开发者已经发布了 Python 3.10.0 的三个测试版本。现在,你可以在 Fedora Linux 中试用最新的版本尽早用 3.10 测试你的 Python 代码,为 10 月份的 3.10.0 最终版本做好准备。
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### 在 Fedora Linux 上安装 Python 3.10
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如果你运行 Fedora Linux,你可以用 `dnf` 从官方仓库安装 Python 3.10:
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```
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$ sudo dnf install python3.10
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```
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你可能需要启用 `updates-testing` 仓库来获得最新的预发布版本:
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```
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$ sudo dnf install --enablerepo=updates-testing python3.10
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```
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随着更多的测试版和候选版 [发布][2],Fedora 包将得到更新。不需要编译你自己的 Python 开发版本,只要安装它就可以获得最新。从第一个测试版开始,Python 开发者不会再增加新的功能了。你已经可以享受所有的新东西了。
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### 用 Python 3.10 测试你的项目
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运行 `python3.10` 命令来使用 Python 3.10,或者用 [内置的 venv 模块 tox][3] 或用 [pipenv][4] 和 [poetry][5] 创建虚拟环境。下面是一个使用 `tox` 的例子:
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```
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$ git clone https://github.com/benjaminp/six.git
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Cloning into 'six'...
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$ cd six/
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$ tox -e py310
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py310 run-test: commands[0] | python -m pytest -rfsxX
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================== test session starts ===================
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platform linux -- Python 3.10.0b3, pytest-6.2.4, py-1.10.0, pluggy-0.13.1
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collected 200 items
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test_six.py ...................................... [ 19%]
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.................................................. [ 44%]
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.................................................. [ 69%]
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.................................................. [ 94%]
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............ [100%]
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================== 200 passed in 0.43s ===================
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________________________ summary _________________________
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py310: commands succeeded
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congratulations :)
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```
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如果你在 Fedora Linux 上发现了 Python 3.10 的问题,请 [在 Fedora 的 bugzilla 上提交 bug 报告][6] 或在 [Python 的问题追踪][7] 上提交。如果你不确定这是否是 Python 的问题,你可以 [通过电子邮件或 IRC 直接联系 Fedora 的 Python 维护者][8] 。
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### Python 3.10 中的新内容
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参见 [Python 3.10 的全部新闻列表][9]。例如,你可以尝试一下 [结构模式匹配][10]:
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```
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$ python3.10
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Python 3.10.0b3 (default, Jun 17 2021, 00:00:00)
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[GCC 10.3.1 20210422 (Red Hat 10.3.1-1)] on linux
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Type "help", "copyright", "credits" or "license" for more information.
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>>> point = (3, 10)
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>>> match point:
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... case (0, 0):
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... print("Origin")
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... case (0, y):
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... print(f"Y={y}")
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... case (x, 0):
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... print(f"X={x}")
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... case (x, y):
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... print(f"X={x}, Y={y}")
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... case _:
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... raise ValueError("Not a point")
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...
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X=3, Y=10
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>>> x
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3
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>>> y
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10
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```
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敬请期待 [Fedora Linux 35 中的 python3 —— Python 3.10][11]!
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--------------------------------------------------------------------------------
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via: https://fedoramagazine.org/python-3-10-beta-in-fedora-linux/
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作者:[Miro Hrončok][a]
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选题:[lujun9972][b]
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译者:[geekpi](https://github.com/geekpi)
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校对:[wxy](https://github.com/wxy)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译,[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://fedoramagazine.org/author/churchyard/
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[b]: https://github.com/lujun9972
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[1]: https://fedoramagazine.org/wp-content/uploads/2021/06/python310-beta-816x345.jpg
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[2]: https://www.python.org/dev/peps/pep-0619/
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[3]: https://developer.fedoraproject.org/tech/languages/python/multiple-pythons.html
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[4]: https://fedoramagazine.org/install-pipenv-fedora/
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[5]: https://python-poetry.org/
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[6]: https://bugzilla.redhat.com/buglist.cgi?component=python3.10&product=Fedora
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[7]: https://bugs.python.org/
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[8]: https://fedoraproject.org/wiki/SIGs/Python#Communicate
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[9]: https://docs.python.org/3.10/whatsnew/3.10.html
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[10]: https://www.python.org/dev/peps/pep-0634/
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[11]: https://fedoraproject.org/wiki/Changes/Python3.10
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