tional),
# first install <a href="https://pip.pypa.io/en/stable/installing/">pip</a>, then install pyephem:
sudo pip install pyephem
        </pre>

    </div>
    <div id="prereq-rhel7-py3" class="tab-content">
        <p>Ensure that Python 3.5 or later is installed.</p>
        <pre class='tty cmd'>python3 -V</pre>
        <p>If not, it can be installed with:</p>
        <pre class="tty cmd">sudo yum install python3</pre>

        <p>
            Install the WeeWX pre-requisites:
        </p>
        <pre