Python 如何在Django中以简洁的形式添加CaptchaField（）？

我正在我的django应用程序中使用包

django simple captcha

声明说，要在表单中添加captcha字段，只需

from django import forms
from captcha.fields import CaptchaField

class CaptchaTestForm(forms.Form):
    myfield = AnyOtherField()
    captcha = CaptchaField()

但是，如果我的表单是脆表单，我如何使用该字段，如下所示-

class SignupForm(authtoolsforms.UserCreationForm):

    def __init__(self, *args, **kwargs):
        super(SignupForm, self).__init__(*args, **kwargs)
        self.helper = FormHelper()
        self.fields["email"].widget.input_type = "email"

        self.helper.layout = Layout(
            Field('email', placeholder="Enter Email", autofocus=""),
            Field('name', placeholder="Enter Full Name"),
            Field('password1', placeholder="Enter Password"),
            Field('password2', placeholder="Re-enter Password"),
            Field('gender', placeholder="Gender"),
            Submit('sign_up', 'Sign up', css_class="btn-warning"),
            )

class SignupForm(authtoolsforms.UserCreationForm):
    captcha = CaptchaField()

    def __init__(self, *args, **kwargs):
        super(SignupForm, self).__init__(*args, **kwargs)
        self.helper = FormHelper()
        self.fields["email"].widget.input_type = "email"

        self.helper.layout = Layout(
            Field('email', placeholder="Enter Email", autofocus=""),
            Field('name', placeholder="Enter Full Name"),
            Field('password1', placeholder="Enter Password"),
            Field('password2', placeholder="Re-enter Password"),
            Field('gender', placeholder="Gender"),
            Field('captcha ', placeholder="Enter captcha"),
            Submit('sign_up', 'Sign up', css_class="btn-warning"),
            )