language: python
python:
  - 2.4
  - 2.5
  - 2.6
  - 2.7
  - 3.3
script:
  - python tests.py
notifications:
  on_success: always

language: python
python:
  - 2.6
  - 2.7
  - 3.3
script:
  - python tests.py
notifications:
  on_success: always

Remove python 2.4, 2.5 from Travis (not supported)
Remove python 2.4, 2.5 from Travis (not supported)