1.python3中无unicode，已经变成str
<Response streamed [405 METHOD NOT ALLOWED]> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<title>405 Method Not Allowed</title>
<h1>Method Not Allowed</h1>
<p>The method is not allowed for the requested URL.</p>
本地测试Flask项目程序的时候遇到的，原因有可能是你的此条route('url')少了第二个参数，或者比如你使用post方式获取，但是并没有声明post
File "/Users/lovehxy/.virtualenvs/flask/lib/python3.4/site-packages/wtforms/fields/core.py", line 175, in validate
stop_validation = self._run_validation_chain(form, chain)
File "/Users/lovehxy/.virtualenvs/flask/lib/python3.4/site-packages/wtforms/fields/core.py", line 195, in _run_validation_chain
validator(form, self)
TypeError: __init__() takes from 1 to 2 positional arguments but 3 were given
原因是：DataRequired需要加上()
email = StringField('email',validators=[DataRequired()])
