Simple example of setup.py

setup.py

from setuptools import setup

setup(
          name="UltimateAnswer",
          version="0.1",
          entry_points = {'console_scripts': ['ult-ans = ultimate_answer:main']},
          py_modules = ['ultimate_answer']
)

ultimate_answer.py

def main():
    print "The ultimate answer to life the universe and everything is 42"
    
if __name__ == '__main__':
    main()