Python django向导在显示多种表单时出现表单问题

我的意见网页：

from django.shortcuts import render
from django.http import HttpResponse
from formtools.wizard.views import SessionWizardView
from .forms import ContactForm1,ContactForm2,ContactForm3


class ContactWizard(SessionWizardView):
    template_name = 'contact.html'
    form_list = [ContactForm1,ContactForm2]

    def done(self, form_list, **kwargs):
        form_data = process_form_data(form_list)

        return render_to_response('done.html', {'form_data': form_data})

    def process_form_data(form_list):
        form_data = [form.cleaned_data for form in form_list]

        return form_data

我的表格页：

from django import forms


class ContactForm1(forms.Form):enter code here
    subject = forms.CharField(max_length=100)


class ContactForm2(forms.Form):
    sender =  forms.EmailField()

class ContactForm3(forms.Form):
    message = forms.CharField(widget=forms.Textarea)

我是Django新手，我正在使用向导表单，但此向导表单未显示向导多表单的if语句。请帮助我解决向导表单。

Html页面

{% load i18n %}

<p>Step {{ wizard.steps.step1 }} of {{ wizard.steps.count }}</p>

{% for field in form %}
{{field.error}}
{% endfor %}
<form action="/contact/" method="post">
{% csrf_token %}
<table>
{{ wizard.management_form }}
{% if wizard.form.forms %}
    {{ wizard.form.management_form }}
    {% for form in wizard.form.forms %}
        {{ form }}
    {% endfor %}
{% else %}
    {{ wizard.form }}
{% endif %}
</table>
{% if wizard.steps.prev %}
<button name="wizard_goto_step" type="submit" value="{{ wizard.steps.first }}">{% trans "first step" %}</button>
<button name="wizard_goto_step" type="submit" value="{{ wizard.steps.prev }}">{% trans "prev step" %}</button>
{% endif %}
<input type="submit" value="{% trans "submit" %}"/>
</form>

{%loadi18n%}
{{wizard.steps.count}的步骤{wizard.steps.step1}

{%形式的字段为%}
{{field.error}
{%endfor%}
{%csrf_令牌%}
{{wizard.management_form}
{%if wizard.form.forms%}
{{wizard.form.management_form}
{wizard.form.forms%中窗体的%s}
{{form}}
{%endfor%}
{%else%}
{{wizard.form}
{%endif%}
{%if wizard.steps.prev%}
{%trans“第一步”%}
{%trans“上一步”%}
{%endif%}

帮助查找向导多种形式中的问题