Unable to upgrade python six package in mac osx 10

问题:

I am trying to install latest version of six python package but I have following issues. Can't get rid of six 1.4.1 in mac OSX 10.10.2

sudo pip install six --upgrade
Requirement already up-to-date: six in /Library/Python/2.7/site-packages
Cleaning up...

pip search six
six - Python 2 and 3 compatibility utilities
INSTALLED: 1.9.0 (latest)

python -c "import six; print six.version"
1.4.1

which -a python
/usr/bin/python
which -a pip
/usr/local/bin/pip

What is wrong here? Can't upgrade six!

回答1:

Mac OS X's default python is installed as a framework. Under the framework directory, there is an 'Extras' directory and six package is already placed there.

/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/six.py

According to the description (https://github.com/MacPython/wiki/wiki/Which-Python), /System/Library/Frameworks/Python.framework/Versions/2.7/Extras is listed before /Library/Python/2.7/site-packages in module search path. This means all packages already exists in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras can't upgrade.

Maybe you should install python manually and not to use default python.

回答2:

I resolved the problem by the following method.

1. Download the six-1.10.0.tar.gz package
2. Use this command to install it.

python setup.py install

This works because it installs the new version of six to /Library/Python/2.7/site-packages/ which is searched before /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/

回答3:

Your pip binary belongs to /usr/local/bin/python, whereas python points to /usr/bin/python. As a consequence

pip install --upgrade six

will install to /usr/local/bin/python.

The command below will make sure that the right version of pip is used:

python -m pip install --upgrade six

回答4:

For me, just using homebrew fixed everything.

brew install python

回答5:

What worked for me was to use easy_install instead of pip.

easy_install -U six

Easy_install managed to upgrade the package even when pip failed.

回答6:

I came across this exact issue when using pip to install the openstack client. My fix was to use easy_install instead of pip, as it utilizes /Library/Python/2.7/site-packages/ for module installation instead of the /System/Library/Frameworks/Python.framework/Versions/2.7/Extras. If this workaround is not an option for you, then I can confirm that @Masakazu Matsushita has the correct workaround of setting PYTHONPATH to /Library/Python/2.7/site-packages. To implement that workaround, add this line:

export PYTHON_PATH=/Library/Python/2.7/site-packages

to your ~/.bashrc and ~/.profile (if its a GUI Python application that you are trying to install).

回答7:

Try these steps

1. Reinstall python using brew

   $ brew install python

2. Resolve missing symlink problem

   $ brew link --overwrite python

3. Reboot system or run

   $ hash -r python

回答8:

Try with pip2 its work for me pip2 install -U six

回答9:

While one or another of the above solutions may work for you, I think it's important to understand what is going on and what are the options that you have. I found this (rather lengthy) description to be very useful: it starts with outlining the options and only then suggests solutions.

回答10:

In the end, the problem for me was that I was using the IPython shell.

which ipython returned /usr/local/bin/ipython and upon inspection this file declared at the top #!/usr/bin/python, which seemed to be circumventing all my best efforts to use the correct python location.

Simply changing this line #!/usr/local/bin/python to point to the correct python version then meant IPython used the correct six module.