I personally would never own one or remain in anyone's house who keeps a python as a pet unattended and caged securely. They are beautiful creatures however I don't believe they can be domesticated with 100% reliability.

In Canada recently two children were killed at a sleep over party when the owners python escaped it's cage. See link.

http://nationalpost.com/news/canada/arrest-made-in-connection-with-fatal-python-case-in-new-brunswick-that-killed-two-young-brothers