无模块命名flask.ext.wtf.SelectField

Question

我发现flask-jquery-ajax-example，我试图用最新的库版本运行它：

$ pip install flask flask-wtf wtforms 
$ pip install -e ./ 

但是，我得到了导入错误：没有模块名为flask.ext。 wtf.SelectField同时启动脚本：

$ python bin/runserver.py 
Traceback (most recent call last): 
    File "bin/runserver.py", line 2, in <module>                                                         
from fjae import run_dev_server                                                           
    File "/home/mic/tmp/flask-jquery-ajax-example/fjae/__init__.py", line 3, in <module>                                             
from fjae import views                                                              
    File "/home/mic/tmp/flask-jquery-ajax-example/fjae/views.py", line 6, in <module>                                              
from fjae.forms import VehicleForm                                                           
    File "/home/mic/tmp/flask-jquery-ajax-example/fjae/forms.py", line 1, in <module>                                              
from flask.ext.wtf import Form, SelectField                                                        
    File "/home/mic/.virtualenvs/unisnp/lib/python2.7/site-packages/flask/exthook.py", line 87, in load_module                                        
raise ImportError('No module named %s' % fullname)                                                       
ImportError: No module named flask.ext.wtf.SelectField 

难道SelectField被新的方法取代？

Answer 1

该教程在大约2年内未更新。 Flask-WTF dropped support for field imports几个版本之前。您需要直接从WTForms中导入它们。

from wtforms import SelectField