通过 Homebrew 并行安装 Python 2.7 和 3.3 - pip3 失败

Question

I would like to make the jump and get acquainted with Python 3. I followed the instructions found here with the installation working flawlessly.

I'm also able to use the provided virtualenv to create enviroments for Python 2 and Python 3 (Followed the instuctions here .). Unfortunalty pip3 fails when no virtualenv is activated. I need to use it to install global modules for python3.

This is the error message:

± |master ✓| → pip3
Traceback (most recent call last):
  File "/usr/local/bin/pip3", line 5, in <module>
    from pkg_resources import load_entry_point
  File "/usr/local/lib/python2.7/site-packages/distribute-0.6.45-py2.7.egg/pkg_resources.py", line 51
    def _bypass_ensure_directory(name, mode=0777):
                                               ^
SyntaxError: invalid token

It looks like pip3 is trying to access distribute of python2. Is there any workaround for this?

Answer 1

I was having the same problem as you were and I had

export PYTHONPATH="/usr/local/lib/python2.7/site-packages:$PYTHONPATH"

in my ~/.bash_profile. Removing that line solved the problem for me. If you have that or something like it in your ~/.bashrc or ~/.bash_profile, try removing it.