问Web2Py忽略当前最新安装的pymongo版本

EN

错误： pydal需要pymongo版本的>= 3.0，找到'2.2.1‘

Pymongo:

import pymongo
pymongo.version
'3.2.2'

错误堆栈： <type 'exceptions.RuntimeError'> Failure to connect, tried 5 times: Traceback (most recent call last): File "/Applications/web2py.app/Contents/Resources/gluon/packages/dal/pydal/base.py", line 446, in __init__ File "/Applications/web2py.app/Contents/Resources/gluon/packages/dal/pydal/adapters/base.py", line 60, in __call__ File "/Applications/web2py.app/Contents/Resources/gluon/packages/dal/pydal/adapters/mongo.py", line 91, in __init__ Exception: pydal requires pymongo version >= 3.0, found '2.2.1'

环境：OSX10.11，Python2.7.10

我只是盯着Python看，所以我需要帮助。耽误您时间，实在对不起!