Django python checkbox

Hello,

i wan to do download file of a checkbox ;
Please help me

this is my viewspy:

def export_selected_dataqq(request):
    if request.method == 'POST':
        _selected_action = request.FILES("_selected_action")
      
    response = HttpResponse(mimetype='application/vnd.ms-excel; charset="Shift_JIS"')
    response['Content-Disposition'] = 'attachment; filename=file.csv'
    writer = csv.writer(response)
    _selected_action = []
    writer.writerow(_selected_action)
  
    for obj in _selected_action:
       
        row=[]
        for field in User._meta.fields:
            row.append(unicode(getattr(obj,field.name)).encode("cp932"))
        writer.writerow(row)
    return response

this is mmy html:

<table >
        <thead>
            <tr>
                <th>Check</th>             
                <th>名前</th>
                <th>会社名</th>
                <th>法人電話</th>
            </tr>
        </thead>
        <tbody>
{% if articles.count > 0 %}
{% for user in articles %}
        <tr>
        <td ><input class="action-select" name="_selected_action" id ="_selected_action" type="checkbox" value="{{user.id }}" type="submit" class="button"></td>
        <td ><a href="/articles/get/{{ user.id }}/">{{ user.user_name  }}</a></td>
        <td >{{ user.company }}</td>
        <td >{{ user.number }}</td>
        </tr>
{% endfor %}

</tbody>
</table>
</form>
{% else %}
    <p>None</p>
{% endif %}

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