PYTHON

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

@app.route('/', methods=['GET','POST'])
def params_form():

    value = 2
    value_dict = {'1': 1==value, '2': 2==value, '3': 3==value}
    
    return render_template('home/sheet.html', value_dict=value_dict)

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>