an class="sd">&quot;&quot;&quot;</span>
<span class="sd">    Similar polars.Expr.str.json_extract, however you can only extract one field! You must specify the field.</span>
<span class="sd">    If the field is not in the json, the value will be null.</span>

<span class="sd">    Args:</span>
<span class="sd">        field (str): The field to extract from the json</span>

<span class="sd">    Examples:</span>

<span class="sd">        &gt;&gt;&gt; qc = QuokkaContext()</span>
<span class="sd">        &gt;&gt