擅长:python、mysql、java
<p>查看<a href="https://pipenv.pypa.io/en/latest/basics/#specifying-versions-of-python" rel="nofollow noreferrer">specifying a python version</a>上的<code>pipenv</code>文档,它指出:</p>
<blockquote>
<p>If you don’t specify a Python version on the command–line, either the [requires] <code>python_full_version</code> or <code>python_version</code> will be selected automatically, falling back to whatever your system’s default python installation is, at time of execution.</p>
</blockquote>
<p>我猜您在升级到python 3.9之前初始化了<code>pipenv</code>项目</p>
<p>如果要更新<code>Pipfile</code>以指定特定的python版本,只需执行以下操作:</p>
<pre class="lang-sh prettyprint-override"><code>pipenv python 3.9
</code></pre>
<p>当然,您也可以手动更新<code>python_version</code>中的<code>Pipfile</code></p>