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On my Mac OS X Lion, I type the following in Terminal:

hobbes3@hobbes3:~$ which python
/usr/local/bin/python
hobbes3@hobbes3:~$ python
Python 2.7.1 (r271:86832, Jun 16 2011, 16:59:05) 
[GCC 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2335.15.00)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> ^D
hobbes3@hobbes3:~$ /usr/local/bin/python
Python 2.7.2 (default, Feb 23 2012, 00:05:44) 
[GCC 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.1.00)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> 

Part of my /usr/local/bin/ looks like this:

lrwxr-xr-x   1 root  wheel    32B Feb 23 00:07 pydoc -> ../Cellar/python/2.7.2/bin/pydoc
lrwxr-xr-x   1 root  wheel    33B Feb 23 00:07 python -> ../Cellar/python/2.7.2/bin/python
lrwxr-xr-x   1 root  wheel    40B Feb 23 00:07 python-config -> ../Cellar/python/2.7.2/bin/python-config
lrwxr-xr-x   1 root  wheel    36B Feb 23 00:07 python2.7 -> ../Cellar/python/2.7.2/bin/python2.7
lrwxr-xr-x   1 root  wheel    43B Feb 23 00:07 python2.7-config -> ../Cellar/python/2.7.2/bin/python2.7-config
lrwxr-xr-x   1 root  wheel    34B Feb 23 00:07 pythonw -> ../Cellar/python/2.7.2/bin/pythonw
lrwxr-xr-x   1 root  wheel    37B Feb 23 00:07 pythonw2.7 -> ../Cellar/python/2.7.2/bin/pythonw2.7

Why is it that the first time I type python I get v2.7.1, but when I type the full path /usr/local/bin/python I get v2.7.2?

I installed v2.7.2 using homebrew, and I would like to use that version because I believe my Django is installed under v2.7.2 python.

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1 Answer

up vote 4 down vote accepted

Because poor bash is confused. Clear python's hash entry.

hash -d python
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Thanks! Worked great. I also have a symbolic link that makes /usr/local/bin/vi follow /usr/local/bin/mvim which is MacVim, a GUI Vim for Mac. But typing hash -d vi didn't work. Typing vi still gives me the default vi. Any idea on this as well? –  hobbes3 Feb 23 '12 at 5:42
    
Similarly which vi gives /usr/local/bin/vi, so it sounds like the same problem. ls -l on /usr/local/bin/ gives lrwxr-xr-x 1 root wheel 19B Feb 9 23:32 vi -> /usr/local/bin/mvim –  hobbes3 Feb 23 '12 at 5:43
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