title: Error when calling the metaclass bases
body: <p>Finding it very difficult to wrap around this basic problem. I'm using python 2.7.10 to follow a flask tutorial being delivered using python 3.4. I'm aware of some differences between the two versions, but seems that knowledge isn't enough to overcome this situation. I have amateur level experience in python. Have a feeling its got something to do with class definition, but unable to nail it. And yes i went through the solutions for similar error but wasn't able to relate the solution to my problem.</p>
  
  <pre><code>Traceback (most recent call last):
    File "manage.py", line 5, in &lt;module&gt;
      from flask_init import app
    File "/Users/sapp/Desktop/ude/flask_init/__init__.py", line 12, in &lt;module&gt;
      from author import views
    File "/Users/sapp/Desktop/ude/flask_init/author/views.py", line 3, in     &lt;module&gt;
      from form import RegisterForm
     File "/Users/sapp/Desktop/ude/flask_init/author/form.py", line 5, in &lt;module&gt;
      class RegisterForm(form):
  TypeError: Error when calling the metaclass bases
  module.__init__() takes at most 2 arguments (3 given)
  </code></pre>
  
  <p>My directory structure:</p>
  
  <pre><code>├── __init__.py
  ├── __init__.pyc
  ├── author
  │   ├── __init__.py
  │   ├── __init__.pyc
  │   ├── form.py
  │   ├── form.pyc
  │   ├── models.py
  │   ├── models.pyc
  │   ├── views.py
  │   └── views.pyc
  ├── blog
  │   ├── __init__.py
  │   ├── __init__.pyc
  │   ├── views.py
  │   └── views.pyc
  ├── manage.py
  ├── requirements.txt
  ├── settings.py
  ├── settings.pyc
  ├── templates
  │   ├── author
  │   └── base.html
  └── venv
      ├── bin
      ├── include
      ├── lib
      └── pip-selfcheck.json
  </code></pre>
  
  <p>manage.py:</p>
  
  <pre><code>import os, sys
  
  from flask_script import Manager, Server
  from flask_init import app
  
  manager = Manager(app)
  
  manager.add_command("runserver", Server(
      do something
      ))
  
  if __name__ == "__main__":
      manager.run()
  </code></pre>
  
  <p>form.py:</p>
  
  <pre><code>from flask_wtf import form
  from wtforms import validators, StringField, PasswordField
  from wtforms.fields.html5 import EmailField
  
  class RegisterForm(form):
      pass
  </code></pre>
  
  <p>init.py:</p>
  
  <pre><code>from flask import Flask
  from flask.ext.sqlalchemy import SQLAlchemy
  app = Flask(__name__)
  app.config.from_object('settings')
  db = SQLAlchemy(app)
  import blog.views
  from author import views
  </code></pre>
  
  <p>views.py:</p>
  
  <pre><code>from flask_init import app
  from flask import render_template, redirect
  from form import RegisterForm
  
  @app.route('/register', method=('GET', 'POST'))
  def register():
      form = RegisterForm()
      return render_template('author/register.html', form=form)
  </code></pre>
  
  <p>I chose not to tag with wtforms as i'm more concerned with what i'm missing when it comes to metaclasses between 2.7 and 3.4.</p>