Twisted 是否改变了它的依赖关系？
我目前正在开发一个 Python/Twisted 项目，该项目将在 Planetlab 上分发和测试。由于某种原因，我的代码在周五可以正常工作，现在我想测试一个小的更改，但它根本无法工作：
Traceback (most recent call last):
File "acn_a4/src/node.py", line 6, in <module>
from twisted.internet.protocol import DatagramProtocol
File "/usr/lib/python2.5/site-packages/Twisted-10.0.0-py2.5-linux-i686.egg/twisted/__init__.py", line 18, in <module>
from twisted.python import compat
File "/usr/lib/python2.5/site-packages/Twisted-10.0.0-py2.5-linux-i686.egg/twisted/python/compat.py", line 146, in <module>
import operator
File "/home/cdecker/dev/acn/acn_a4/src/operator.py", line 7, in <module>
File "/home/cdecker/acn_a4/src/node.py", line 6, in <module>
from twisted.internet.protocol import DatagramProtocol
File "/usr/lib/python2.5/site-packages/Twisted-10.0.0-py2.5-linux-i686.egg/twisted/internet/protocol.py", line 20, in <module>
from twisted.python import log, failure, components
File "/usr/lib/python2.5/site-packages/Twisted-10.0.0-py2.5-linux-i686.egg/twisted/python/log.py", line 19, in <module>
from twisted.python import util, context, reflect
File "/usr/lib/python2.5/site-packages/Twisted-10.0.0-py2.5-linux-i686.egg/twisted/python/util.py", line 5, in <module>
import os, sys, hmac, errno, new, inspect, warnings
File "/usr/lib/python2.5/inspect.py", line 32, in <module>
from operator import attrgetter
ImportError: cannot import name attrgetter
而且由于我对 python 还很陌生，所以我不知道是什么导致了这个问题。
欢迎所有建议:-)
I'm currently working on a Python/Twisted project which is to be distributed and tested on Planetlab. For some reason my code was working on friday and now that I wanted to test a minor change it refuses to work at all:
Traceback (most recent call last):
File "acn_a4/src/node.py", line 6, in <module>
from twisted.internet.protocol import DatagramProtocol
File "/usr/lib/python2.5/site-packages/Twisted-10.0.0-py2.5-linux-i686.egg/twisted/__init__.py", line 18, in <module>
from twisted.python import compat
File "/usr/lib/python2.5/site-packages/Twisted-10.0.0-py2.5-linux-i686.egg/twisted/python/compat.py", line 146, in <module>
import operator
File "/home/cdecker/dev/acn/acn_a4/src/operator.py", line 7, in <module>
File "/home/cdecker/acn_a4/src/node.py", line 6, in <module>
from twisted.internet.protocol import DatagramProtocol
File "/usr/lib/python2.5/site-packages/Twisted-10.0.0-py2.5-linux-i686.egg/twisted/internet/protocol.py", line 20, in <module>
from twisted.python import log, failure, components
File "/usr/lib/python2.5/site-packages/Twisted-10.0.0-py2.5-linux-i686.egg/twisted/python/log.py", line 19, in <module>
from twisted.python import util, context, reflect
File "/usr/lib/python2.5/site-packages/Twisted-10.0.0-py2.5-linux-i686.egg/twisted/python/util.py", line 5, in <module>
import os, sys, hmac, errno, new, inspect, warnings
File "/usr/lib/python2.5/inspect.py", line 32, in <module>
from operator import attrgetter
ImportError: cannot import name attrgetter
And since I'm pretty new to python I have no idea what could have caused this problem.
All suggestions are welcome :-)
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您自己的文件之一
/home/cdecker/dev/acn/acn_a4/src/operator.py隐藏了 Python 的内置operator模块。您应该将自己的operator.py重命名为其他名称。您可以在此处看到问题：
Twisted 尝试
导入运算符，但 Python 会加载您自己的模块之一。为了防止将来出现类似的情况，您可能不应该将 src 文件夹添加到 PYTHONPATH 中。相反，创建一个包，以便您自己的文件显示为
myproject.mymodule并且不能隐藏内置文件。One of your own files,
/home/cdecker/dev/acn/acn_a4/src/operator.pyshadows Python's builtinoperatormodule. You should rename your ownoperator.pyto something else.You can see the problem here:
Twisted tries to
import operatorbut Python loads one of your own modules.To prevent stuff like that in the future you should probably not add your src folder to the PYTHONPATH like that. Create a package instead, so that your own files appear as
myproject.mymoduleand can't shadow builtins.当由于模块或包或名称不存在而无法导入名称时，在
import语句中引发ImportError。在您的情况下，operator模块中不存在attrgetter。第一个想法是在项目的主目录中定义一个名为
operator的模块。模块或包按照sys.path顺序进行搜索，如果您在主目录中定义了具有相同名称的模块，则会隐藏搜索路径中具有相同名称的所有其他模块。ImportErroris raised onimportstatement when a name cannot be imported, because module or package or name doesn't exists. In your caseattrgetterdoesn't exists inoperatormodule.The first idea is that you define a module called
operatorin the project's main directory. Modules, or packages, are searched followingsys.pathorder, if you define a module with the same name in your main directory, you are hiding all others module with the same name in the search path.