如何在Django表单中显示变量？

from django.shortcuts import render
from .forms import MyForm

def my_view(request):
    my_variable = "Hello, World!"
    form = MyForm(request.POST or None, my_variable=my_variable)
    if form.is_valid():
        # 处理表单提交
        pass
    return render(request, 'my_template.html', {'form': form})

from django import forms

class MyForm(forms.Form):
    def __init__(self, *args, **kwargs):
        my_variable = kwargs.pop('my_variable', None)
        super(MyForm, self).__init__(*args, **kwargs)
        self.fields['my_field'] = forms.CharField(initial=my_variable)

<form method="post">
    {% csrf_token %}
    {{ form.my_field }}
    <button type="submit">提交</button>
</form>