擅长:python、mysql、java
<p><code>psycopg2</code><a href="http://initd.org/psycopg/docs/install.html#install-from-source" rel="nofollow noreferrer">has some install dependencies that might be giving you trouble</a>。在本例中,安装过程似乎找不到<a href="https://en.wikipedia.org/wiki/C_file_input/output" rel="nofollow noreferrer">^{<cd2>}</a>,它是C标准库的一部分。<a href="http://osxdaily.com/2014/02/12/install-command-line-tools-mac-os-x/" rel="nofollow noreferrer">Installing the Xcode Command Line Tools</a>可能会有帮助。在</p>
<p>但如果您不想为此烦恼,请尝试安装<a href="https://pypi.org/project/psycopg2-binary/" rel="nofollow noreferrer">^{<cd3>}</a>:</p>
<blockquote>
<p>You can also obtain a stand-alone package, not requiring a compiler or external libraries, by installing the <a href="https://pypi.org/project/psycopg2-binary/" rel="nofollow noreferrer">psycopg2-binary</a> package from PyPI:</p>
<pre><code>$ pip install psycopg2-binary
</code></pre>
<p>The binary package is a practical choice for development and testing but in production it is advised to use the package built from sources.</p>
</blockquote>