toward iPython: easy_install can't find my Python(s) on Mac OS 10.5.8

Installed setuptools-0.6c11-py2.7.egg on my Mac OS 10.5.8 but then

sudo easy_install readline ipython

yields a possib开发者_Go百科le script problem?

Processing readline-6.2.0.tar.gz
Running readline-6.2.0/setup.py -q bdist_egg --dist-dir /tmp/easy_install-N_JiZD/readline-  6.2.0/egg-dist-tmp-9IRgCS
No eggs found in /tmp/easy_install-N_JiZD/readline-6.2.0/egg-dist-tmp-9IRgCS (setup script problem?)

and easy_install can't find my Python(s)

ERROR: 'IPython requires Python Version 2.6 or above.' 
Exiting.
error: Setup script exited with 1

however I just installed 2.7 and my active version is 3.0.1

$ ls /Library/Frameworks/Python.framework/Versions/
2.7 3.0 Current

based on tips I found here, I tried installing setuptools directly into .../2.7/bin/ but all I got was a lecture from easy_install that

setuptools 0.6c11 is already the active version in easy-install.pth

another tip I saw here was to run

$ python2.7 setup.py install               
/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python: can't open file 'setup.py': [Errno 2] No such file or directory

That result is troubling. How can I help easy_install find my stuff? Have I done something goofy?

Which version of python is easy_install for? Look at the top of the file listed by which easy_install. I'll bet it's Python 2.6. See if you have an easy_install-2.7 or somesuch and use that instead if you do. If not, then make sure you reinstall setuptools with the right python version.

Finally, I don't think you need to specify easy_install readline since it will be installed automatically as a dependency of iPython when iPyhon is easy_installed.