定義WTFoms表單會引發TypeError：調用元類基數時出錯

Question

我正在嘗試使用Flask-WTF定義一個簡單的表單。 我TypeError: Error when calling the metaclass bases收到TypeError: Error when calling the metaclass bases 。 為什么會出現此錯誤？

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

您導入了模塊form並將其作為RegisterForm的基類傳遞。 模塊不是有效的基類。 您正在尋找form.Form ，該模塊中的類Form 。

from flask_wtf.form import Form

class RegisterForm(Form):
    pass