CODEWITHSUNDEEP
pythonmacospython-2.7piphomebrew
litturt
litturt

Reputation: 403

pip installing to wrong folder even though `which pip` is correct

I'm using Mac OS X 10.10. I want to use pip to install packages for my homebrew installed version of python (located in /usr/local/bin/python, which is an alias that points to /usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/bin). It appears that site-packages for this version are here: /usr/local/lib/python2.7/site-packages/.

which python returns /usr/local/bin/python

which pip returns /usr/local/bin/pip

These seem correct to me.

Trying something like pip install pylzma returns:

Collecting pylzma
Installing collected packages: pylzma
Successfully installed pylzma
You are using pip version 8.0.2, however version 8.1.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

But then pip list does not show pylzma to be installed. It looks like pip installs the packages to /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages (the python that ships with Mac OS X).

How can I get pip to install to my homebrewed python?

I've tried a number of suggestions from similar questions:

  1. I've tried export PATH=/usr/local/bin/python:${PATH}.
  2. I've tried pip install --install-option="--prefix=/usr/local/lib/python2.7" pylzma.
  3. I've tried changing the first line of the pip executable script to #!/usr/local/bin/python
  4. I've tried /usr/local/bin/python -m pip install pylzma.

But none of these work. I also tried upgrading pip to 8.1.1, but that made pip break entirely. People recommend using virtualenv, but as far as I know, I can't install that without pip.

When I type python -m pip, it says:

Usage:
/usr/local/opt/python/bin/python2.7 -m pip <command> [options]

Could that be a problem?

Upvotes: 4

Views: 3141

Answers (1)

litturt
litturt

Reputation: 403

My issue was that my /Users/<username>/.pydistutils.cfg contained the following:

[easy_install]

# set the default location to install packages
install_dir = /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages

[install]
install_lib = /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages
install_scripts = ~/bin

I changed this to:

[easy_install]
# set the default location to install packages
install_dir = /usr/local/lib/python2.7/site-packages

[install]
install_lib = /usr/local/lib/python2.7/site-packages
install_scripts = ~/bin

That seemed to have worked. pip install now installs packages to the desired location /usr/local/lib/python2.7/site-packages.

However, I am have ongoing path issues.

import pylzma still gives me ImportError: No module named pylzma.

and running jupyter notebook in terminal gives -bash: jupyter: command not found. /Users/<username>/bin/jupyter notebook does execute, but I get ImportError: No module named markupsafe despite the fact that /usr/local/lib/python2.7/site-packages/MarkupSafe-0.23.dist-info exists.

EDIT: I got jupyter notebook working eventually. I had to install several packages from the source tarballs directly, including MarkupSafe, functools32, and jsonschema. Maybe Python is not looking in the correct folder or something.

Upvotes: 2

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