定义WTFoms表单会引发TypeError：调用元类基数时出错

Question

我正在尝试使用Flask-WTF定义一个简单的表单。 我TypeError: Error when calling the metaclass bases收到TypeError: Error when calling the metaclass bases 。 为什么会出现此错误？

from flask_wtf import form

class RegisterForm(form):
    pass

Traceback (most recent call last):
  File "manage.py", line 5, in <module>
    from flask_init import app
  File "/Users/sapp/Desktop/ude/flask_init/__init__.py", line 12, in <module>
    from author import views
  File "/Users/sapp/Desktop/ude/flask_init/author/views.py", line 3, in     <module>
    from form import RegisterForm
   File "/Users/sapp/Desktop/ude/flask_init/author/form.py", line 5, in <module>
    class RegisterForm(form):
TypeError: Error when calling the metaclass bases
module.__init__() takes at most 2 arguments (3 given)

Answer 1

您导入了模块form并将其作为RegisterForm的基类传递。 模块不是有效的基类。 您正在寻找form.Form ，该模块中的类Form 。

from flask_wtf.form import Form

class RegisterForm(Form):
    pass