ImportError: Twisted requires zope.interface 3.6.0 or later: actually it have been installed

0
votes

I use OSX 10.9 + Kivy 1.9.1, but I have two versions of Python, Mac OSX self-contained 2.7.5 and another standalone 2.7.9 installed. Here are the details:

MacBook-Air:wzy$ python

Python 2.7.5 (default, Mar 9 2014, 22:15:05) [GCC 4.2.1 Compatible Apple LLVM 5.0 (clang-500.0.68)] on darwin Type "help", "copyright", "credits" or "license" for more information.

MacBook-Air:wzy$ python

Python 2.7.9 (v2.7.9:648dcafa7e5f, Dec 10 2014, 10:10:46) [GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin Type "help", "copyright", "credits" or "license" for more information.

After having installed twisted with pip install twisted, I get the following error message in kivy with python 2.7.5, which does not happen in python 2.7.9

MacBook-Air:wzy$ kivy
>>> import twisted

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/twisted/__init__.py", line 53, in <module>
    _checkRequirements()
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/twisted/__init__.py", line 37, in _checkRequirements
    raise ImportError(required + ": no module named zope.interface.")
ImportError: Twisted requires zope.interface 3.6.0 or later: no module named zope.interface.

MacBook-Air:wzy$ python
>>> import twisted
>>> exit()

I have even installed zope.interface several times and dedicate install target directory as one of the sys.path of kivy environment.

I do believe this is two version co-exist related, but how can I fix this?

3
pythontwistedkivyzope

3 Answers

2
votes

When you do pip install twisted, you are installing Twisted into some Python environment, depending on which python executable you are invoking pip with. If you have a 2.7.5 environment and a 2.7.9 environment, pip install might be putting Twisted in a different place for each, depending on what other options you passed to pip. (You probably passed some other options to pip install because without privileges, by default, pip install will just fail. Did you do sudo pip install perhaps? Did you do pip install as an admin user into a homebrewed Python?)

The right way to do this is to only ever install Twisted into virtual environments. You can create a virtual environment with the -p option to virtualenv, which tells it which Python to use for that environment. Then, with the correct virtual environment active, you can pip install twisted and everything should work as you expect.

2
votes

I had the same import error problem, providing another possible solution here:

I have zope.interface 4.4.2 installed, it turned out that my twisted version is too old. By upgrade twisted solved my problem. pip install --upgrade twisted

0
votes

Thanks Glyph,

Finally I find following simple command could directly fix this problem, because Kivy use his own virtualenv environment, but I do appreciated your kindly help.

kivy -m pip install twisted

Best Wish to you,