Can't run "cd" with xargs
 

I'm trying to use xargs within a script as follows and I'm not sure why the command is failing:

rwalsh05@linux-tax7:/usr/lib> ls|grep -E '^python2.'|xargs -t cd
cd python2.5
xargs: cd: No such file or directory

The point is to cd to /usr/lib/python2.5 from /usr/lib. I'm using ls with xargs to pick out the correct directory to change to since /usr/lib contains "python" and "python2.5"