Django:隐藏空的单选按钮选项，但仍然允许它不为空

from django import forms

class MyForm(forms.Form):
    my_field = forms.ChoiceField(choices=[('option1', 'Option 1'), ('option2', 'Option 2')], required=False)

<form method="post">
    {% csrf_token %}
    {{ form.my_field }}
    <input type="submit" value="Submit">
</form>

from django.shortcuts import render
from .forms import MyForm

def my_view(request):
    if request.method == 'POST':
        form = MyForm(request.POST)
        if form.is_valid():
            # 处理有效的表单数据
            my_field_value = form.cleaned_data['my_field']
            # ...
    else:
        form = MyForm()
    
    return render(request, 'my_template.html', {'form': form})