When searching for a solution for my problem, all advice points towards just prepending my $PATH variable with the path to that version of Python, but that doesn't help.
Here's my .bash_profile:
PATH="/usr/local/mysql/bin:/bin:/usr/bin:/usr/local/bin:~/bin"
export PATH="~/bin/python/anaconda:/opt/local/bin:/opt/local/sbin:$PATH"
export PATH="/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4:$PATH"
PYTHONPATH="/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4:${PYTHONPATH}
$ which python
/usr/bin/python
>>> import sys
>>> for p in sys.path:
... print(p)
...
/Library/Frameworks/Python.framework/Versions/3.4/lib/python34.zip
/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4
/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/plat-darwin
/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/lib-dynload
/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages
Almost all *nix systems like MacOSX, most Linux distributions, expect python to refer to Python 2; python3 to Python 3. If you change this, something might break badly. Thus even though the PEP 394 talks about the "default" python distribution for python, and that all Python 2 scripts would use python2 in shebang, it is not the fact yet. Many programs expect python to stand for python2.
Furthermore even in such a system you still should prefix your scripts with python3 and explicitly run your Python 3 programs with that command. Just prefix your scripts with something like
#!/usr/bin/env python3
and it should work.
If you are bugged about python 2.7 opening whenever you execute python, do an alias in your .bashrc:
alias python=python3
Also I am not sure if whatever you are doing with PYTHON_PATH is wise; the python interpreter will know where to look for its own libraries without this hackery.
The author of the suggestion that solved my problem deleted their post already, but the command sudo ln -s /usr/bin/python /Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4 did the trick.
