Python on Eclipse MacOSX

1. Install Eclipse Luna

2. Install Python Plugin using Eclipse Marketplace
Python Plugin: Python IDE for Eclipse

3. Set up Python Interpreters
Preferences > PyDev > Interpreters > Python Interpreter,
and then click Quick Auto-Config or Advanced Auto-Config

If you have more than two versions of Python, click Advanced Auto-Config

reference
http://thddudco.tistory.com/entry/Python-Eclipse-%ED%99%98%EA%B2%BD-%EC%84%A4%EC%A0%95