s="s2">&quot;eps&quot;</span><span class="p">,</span>
    <span class="p">]</span>
    <span class="n">flags_keys</span> <span class="o">=</span> <span class="p">[</span>
        <span class="s2">&quot;nonanalytic&quot;</span><span class="p">,</span>
        <span class="s2">&quot;convergence&quot;</span><span class="p">,</span>
        <span class="s2">&quot;isotopes&quot;</span><span class="p">,</span>
        <span class="s2">&quot;autoisotopes&quot;</span><span class="p">,</span>
        <span class="s2