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我正在創建一個pylons應用程序，並且在嘗試使用paster啓動應用程序時不斷收到錯誤消息。我在谷歌上搜索了答案，並且一直沒有提供任何答案。有人有主意嗎？SQLAlchemy pool.addListener錯誤
Traceback (most recent call last):
File "/opt/python2.7/bin/paster", line 8, in <module>
load_entry_point('PasteScript==1.7.3', 'console_scripts', 'paster')()
File "/opt/python2.7/lib/python2.7/site-packages/PasteScript-1.7.3-py2.7.egg/paste/script/command.py", line 84, in run
invoke(command, command_name, options, args[1:])
File "/opt/python2.7/lib/python2.7/site-packages/PasteScript-1.7.3-py2.7.egg/paste/script/command.py", line 123, in invoke
exit_code = runner.run(args)
File "/opt/python2.7/lib/python2.7/site-packages/PasteScript-1.7.3-py2.7.egg/paste/script/command.py", line 218, in run
result = self.command()
File "/opt/python2.7/lib/python2.7/site-packages/PasteScript-1.7.3-py2.7.egg/paste/script/serve.py", line 276, in command
relative_to=base, global_conf=vars)
File "/opt/python2.7/lib/python2.7/site-packages/PasteScript-1.7.3-py2.7.egg/paste/script/serve.py", line 313, in loadapp
**kw)
File "/opt/python2.7/lib/python2.7/site-packages/PasteDeploy-1.3.4-py2.7.egg/paste/deploy/loadwsgi.py", line 203, in loadapp
return loadobj(APP, uri, name=name, **kw)
File "/opt/python2.7/lib/python2.7/site-packages/PasteDeploy-1.3.4-py2.7.egg/paste/deploy/loadwsgi.py", line 224, in loadobj
return context.create()
File "/opt/python2.7/lib/python2.7/site-packages/PasteDeploy-1.3.4-py2.7.egg/paste/deploy/loadwsgi.py", line 617, in create
return self.object_type.invoke(self)
File "/opt/python2.7/lib/python2.7/site-packages/PasteDeploy-1.3.4-py2.7.egg/paste/deploy/loadwsgi.py", line 109, in invoke
return fix_call(context.object, context.global_conf, **context.local_conf)
File "/opt/python2.7/lib/python2.7/site-packages/PasteDeploy-1.3.4-py2.7.egg/paste/deploy/util/fixtypeerror.py", line 57, in fix_call
val = callable(*args, **kw)
File "/home/tripwire/foo.com/foo/foo/config/middleware.py", line 37, in make_app
config = load_environment(global_conf, app_conf)
File "/home/tripwire/foo.com/foo/foo/config/environment.py", line 49, in load_environment
engine = engine_from_config(config, 'sqlalchemy.')
File "/opt/python2.7/lib/python2.7/site-packages/SQLAlchemy-0.6.6-py2.7.egg/sqlalchemy/engine/__init__.py", line 281, in engine_from_config
return create_engine(url, **opts)
File "/opt/python2.7/lib/python2.7/site-packages/SQLAlchemy-0.6.6-py2.7.egg/sqlalchemy/engine/__init__.py", line 263, in create_engine
return strategy.create(*args, **kwargs)
File "/opt/python2.7/lib/python2.7/site-packages/SQLAlchemy-0.6.6-py2.7.egg/sqlalchemy/engine/strategies.py", line 152, in create
pool.add_listener({'first_connect':first_connect})
AttributeError: 'str' object has no attribute 'add_listener'
一些更多的信息（和代碼）會很好。你能否在paster之外成功使用SQLAlchemy業務代碼？ – phooji 2011-03-27 01:59:16
我對塔架很新，所以我不太確定。我會查找如何在貼圖之外使用該代碼並嘗試一下。除此之外，我不知道代碼/信息會有幫助，這個錯誤看起來像是來自SQLAlchemy本身。 – TripWired 2011-03-27 17:03:09