Python PageDownField примеры использования

Пример #1

class PostForm(Form):
    body = PageDownField(u"想写点什么?", validators=[Required()])
    submit = SubmitField(u'提交')

Пример #2

class PostForm(Form):
    body = PageDownField("What's on your mind?", validators=[Required()])
    submit = SubmitField('Submit')

Пример #3

class PostForm(Form):
    title = TextAreaField('Post title',validators=[Required()])
    body = PageDownField('New Post.',validators=[Required()])
    submit = SubmitField('Submit')