Can import objc module in python 2.6 but NOT in python 2.7
Question: My system: Mac OS X 10.6.8, gcc 4.2, python 2.7, xcode 3.2.3

I use python 2.7 and I got error when tried to do: `import objc`, it returns:
`ImportError: No module named objc`.

It looks like the objc module is not there. But actually I have the objc
module installed already. Snow Leopard has got pyobjc preinstalled and I have
also checked this using python2.6 (I have python 2.7 and 2.6 in my Mac). So if
I invoke `import objc` using python2.6, I got no error which means `objc`
exists and I can use that module without problems ... but if I import using
python 2.7, I will got the `ImportError: No module named objc` error.

Does anyone have any solution? FYI, the python2.6 is coming preinstalled with
OS X while 2.7 is manually installed. I've been using the 2.7 for couple of
months without problems.


Answer: Python C extension modules like `objc` cannot be re-used between python
versions. You'll have to install the `objc` module for 2.7 separately.

Generally, different python installations (such as 2.6 or 2.7, or 3.2) use
separate module import locations, and you normally install extensions _per_
python setup.

