What is the matter when I installing spark-python on CentOS
You are installing spark Python 1.6 which depends on Python 2.6
I think the current stable version is 2.x and the package for that is pyspark. Try installing that. It might require Python 3.0 but thats easy enough to install.
You'll probably need to reinstall the other spark packages as well to make sure they are the right version.
I have a problem installing spark-python on CentOS.
When I installed it using yum install spark-python, I get the following error message.

Error: Package: spark-python-1.6.0+cdh5.9.0+229-1.cdh5.9.0.p0.30.el5.noarch (cloudera-cdh5)
             Requires: python26
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest

I already installed other spark packages (spark-master, spark-worker...) but it only occurred installing spark-python.
Can anyone help me?