ImportError при импорте форм Flask WTF

Question

Я не вижу, где я иду не так. У меня установлены последние формы WTF, но я все еще получаю эту ошибку.

Метод:

from flask.ext.wtf import Form
from wtforms import PasswordField, validators, fields
from wtforms.fields import TextField, BooleanField
from wtforms.validators import Required, Email, EqualTo

Результат:

Traceback (most recent call last):

  File "/bin/user_wsgi_wrapper.py", line 67, in __call__
self.error_log_file.logger.exception("Error running WSGI application")
  File "/usr/lib/python3.3/logging/__init__.py", line 1269, in exception
self.error(msg, *args, **kwargs)
  File "/usr/lib/python3.3/logging/__init__.py", line 1262, in error
self._log(ERROR, msg, args, **kwargs)
  File "/usr/lib/python3.3/logging/__init__.py", line 1368, in _log
self.handle(record)
  File "/usr/lib/python3.3/logging/__init__.py", line 1377, in handle
if (not self.disabled) and self.filter(record):
 File "/usr/lib/python3.3/logflask_wtf
wtformsging/__init__.py", line 687, in filter
for f in self.filters:
 File "/bin/user_wsgi_wrapper.py", line 59, in __call__
app_iterator = self.app(environ, start_response)
 File "/bin/user_wsgi_wrapper.py", line 73, in import_error_application
raise e
 File "/bin/user_wsgi_wrapper.py", line 82, in <module>
application = load_wsgi_application()
 File "/bin/user_wsgi_wrapper.py", line 78, in load_wsgi_application
return __import__(os.environ['WSGI_MODULE'], globals(), locals(),     ['application']).application
 File "/var/www/rcham_pythonanywhere_com_wsgi.py", line 16, in <module>
from addressbook.app import app as application
 File "/home/rcham/mysite/addressbook/app.py", line 4, in <module>
from addressbook.forms import LoginForm, ContactsForm
 File "/home/rcham/mysite/addressbook/forms.py", line 1, in <module>
from flask.ext.wtf import Form
 File "/usr/local/lib/python3.3/dist-packages/flask/exthook.py", line 87, in load_module
raise ImportError('No module named %s' % fullname)
ImportError: No module named flask.ext.wtf

ls /home/rcham/.local/lib/python2.7/site-packages/flask

__init__.py blueprints.py debughelpers.py globals.pyc logging.pyc signals.pyc views.py
__init__.pyc blueprints.pyc debughelpers.pyc helpers.py module.py templating.py views.pyc
_compat.py config.py ext helpers.pyc module.pyc templating.pyc wrappers.py
_compat.pyc config.pyc exthook.py json.py sessions.py testing.py wrappers.pyc
app.py ctx.py exthook.pyc json.pyc sessions.pyc testing.pyc
app.pyc ctx.pyc globals.py logging.py signals.py testsuite

ls /usr/local/lib/python3.3/dist-packages/ | grep wtf

flask_wtf wtforms

Answer 1

Согласно официальному краткому старту, flask.ext.wtf должно быть flask_wtf,

Таким образом, вы должны импортировать его как:

from flask_wtf import FlaskForm 

По крайней мере, я установил из пипса.

Answer 2

Пожалуйста, используйте

from flask_wtf import Form

from wtforms import TextField, BooleanField,IntegerField
from wtforms.validators import Required

Это было изменено с v0.8

Answer 3

Похоже, вы только установили wtformsне Flask-WTF расширение.

Установить Flask-WTF: pip install flask-wtf

Answer 4

Похоже, что требуемые wtf.validators изменены с использования метода Required() на метод DataRequired(). Итак, измените:

from wtforms.validators import Required, Email, EqualTo

к:

from wtforms.validators import DataRequired, Email, EqualTo

и измените все ссылки на метод Required() на DataRequired.

Похоже, что требуемый метод устарел с WTForms 3.0https://wtforms.readthedocs.io/en/2.3.x/_modules/wtforms/validators/