Can't install psycopg2 package through pip install... Is this because of Sierra?
<p>I am working on a project for one of my lectures and I need to download the package psycopg2 in order to work with the postgresql database in use. Unfortunately, when I try to pip install psycopg2 the following error pops up:</p>

<pre><code>ld: library not found for -lssl
clang: error: linker command failed with exit code 1 (use -v to see invocation)
error: command '/usr/bin/clang' failed with exit status 1
ld: library not found for -lssl
clang: error: linker command failed with exit code 1 (use -v to see invocation)
error: command '/usr/bin/clang' failed with exit status 1
</code></pre>

<p>Does anyone know why this is happening? Is it because Sierra has not supported some packages? Thanks in advance!</p>

<p>It looks like the openssl package is not installed. Try installing it and <code>pip install</code> again. I'm not a macos user, but I believe that <a href="http://brew.sh/" rel="nofollow"><code>brew</code></a> simplifies package management on that platform.</p>

<p>You might also need to install the Python development and postgresql development packages.</p>

python pip psycopg2