<p>在正确设置<code>setuptools</code>和<code>pbr</code>之后,可以使用以下几种方法:</p>
<pre class="lang-py prettyprint-override"><code>import pkg_resources # part of setuptools
# I don't like this one because the version method is hidden
v1 = pkg_resources.require("my_package_name")[0].version
print('v1 {}'.format(v1))
# This is my favorite - the output without .version is just a longer string with
# both the package name, a space, and the version string
v2 = pkg_resources.get_distribution('my_package_name').version
print('v2 {}'.format(v2))
from pbr.version import VersionInfo
# This one seems to be slower, and with pyinstaller makes the exe a lot bigger
v3 = VersionInfo('my_package_name').release_string()
print('v3 {}'.format(v3))
# Update, new option as of Python 3.8 (credit: sinoroc)
# In Python 3.8, importlib.metadata is part of the stdlib,
# which removes run-time dependencies on `pbr` or `setuptools`
import importlib.metadata
__version__ = importlib.metadata.version('my_package_name')
</code></pre>
<p>如果需要从命令行执行此操作,可以执行以下操作:</p>
^{pr2}$
<p>或者甚至运行设置.py脚本中的脚本(如果包始终在本地安装):</p>
<pre class="lang-py prettyprint-override"><code>from subprocess import Popen, PIPE
(output, err) = Popen('py setup.py version'.split(' '),
stdout=PIPE, stderr=PIPE, text=True).communicate()
if err: print('ERROR: "{}"'.format(err))
else: print('setup.py version = {}'.format(output))
</code></pre>
<p><strong>注意:</strong>有关使用子进程启动和读取stdout等的更多详细信息,尤其是在Python的旧版本(3.7之前)上。在</p>
<p>然后可以将<code>__version__</code>添加到包<code>__init__.py</code>中,如下所示:</p>
<pre class="lang-py prettyprint-override"><code>__all__ = (
'__version__',
'my_package_name'
)
# Or substitute a different method and assign the result to __version__
import pkg_resources # part of setuptools
__version__ = pkg_resources.get_distribution("my_package_name").version
</code></pre>
<hr/>
<p>其他一些问题和解答可能有助于设置以及如何更新版本和其他信息的详细信息,特别是如果从Git repo获取信息(来自标记、作者和ChangeLog信息的版本):</p>
<ul>
<li><a href="https://stackoverflow.com/q/58549784/6501141">How to update git metadata in a Python Packages using Setuptools and PBR
</a></li>
<li><a href="https://stackoverflow.com/q/58491577/6501141">Python Setuptools and PBR - how to create a package release using the git tag as the version?</a></li>
</ul>