Python烧瓶: TypeError：__call__()只有3个参数(2个给定)

Question

我的代码中有一个关于python使用框架烧瓶的问题。我不知道我的代码中有什么错误。也许是我在wtform领域的错误。请帮帮我

这是我的错误在这里输入图像描述

我的档案: setpassword.py

from flask import render_template, Blueprint, request, redirect, url_for, abort, flash, current_app
from urlparse import urlparse, urljoin
from forms import SetpasswordForm
from flask_login import login_user, logout_user, login_required, current_user
from models import Partner, User, mail, db
from flask_mail import Message
import uuid

setpassword_blueprint = Blueprint('setpassword', __name__)


@setpassword_blueprint.route('/', methods=['GET', 'POST'])
def setpassword():
    form = SetpasswordForm()
    if form.validate_on_submit():
        print "halo"
    return render_template('forms/setpassword.html', form=form)

setpassword_form.py

from flask_wtf import FlaskForm
from wtforms import StringField, PasswordField
from wtforms.validators import DataRequired, Length, Email, EqualTo


class SetpasswordForm(FlaskForm):
     password = StringField('Password', [Length(min=6, max=20, message='Password minimal 6 karakter dan maksimal 20 karakter.')], [DataRequired()])
     confirm_password = StringField('Confirm Password', [EqualTo('password', message='Password dan Confirm password tidak sama.')], [DataRequired()])

def __init__(self, *args, **kwargs):
    FlaskForm.__init__(self, *args, **kwargs)

Answer 1

从doc - https://wtforms.readthedocs.io/en/2.3.x/fields/#field-definitions中，在初始化表单元素时，验证器应该在一个列表中传递，而不是由逗号分隔的多个列表中传递。

password = StringField('Password', 
                     [Length(min=6, max=20, message='Password minimal 6 karakter dan maksimal 20 karakter.'),
                     DataRequired()]
)