Extending python built-ins

PowerList.py

"""
Simple example to explain how to extend built-in python objects
"""
class PowerList(list):
    def search(self, name):
        results = []
        for obj in self:
            if obj == name:
                results.append(name)
        return results

lista = PowerList()
lista.append('augusto')
lista.append('cintia')
lista.append('eduarda')

assert lista.search('augusto') == ['augusto']
assert lista.search('paulo') == []