[Paparazzi-devel] How can I active the python27?

[????????]

I have install the python27 in my OSX.

I input:port select --list python

it responds:

Available versions for python:

none (active)

python25-apple

python26-apple

python27

python27-apple

it seems like that it has be installed successfully.But I can't active the python27.

I input:sudo port select --set python python27

it responds:Selecting 'python27' for 'python' failed: symlink: /opt/local/etc/select/python/current -> python27: file already exists