CODE EXAMPLE FOR PYTHON

HTML default value fo radio button input type based on python variable

<div>
    <input type="radio" id="n1" name="nyears" value=1  {{ 'checked' if value_dict["1"] else '' }} >
        <label for="n1"> 1 </label>

    <input type="radio" id="n2" name="nyears" value=2  {{ 'checked' if value_dict["2"] else '' }} >
        <label for="n2"> 2 </label>

    <input type="radio" id="n3" name="nyears" value=3  {{ 'checked' if value_dict["3"] else '' }} >
        <label for="n3"> 3 </label>
</div>