stdlib-part3.py

#Example
import functools

@functools.total_ordering
class Job(object):
    def __init__(self,priority,descr):
        self.priority = priority
        self.descr = descr

    def __eq__(self,other):
        print "test __eq__ (%s,%s)" % (self.priority,other.priority)
        return self.priority == other.priority

    def __gt__(self,other):
        print "test __gt__ (%s,%s)" % (self.priority,other.priority)
        return self.priority>other.priority


low = Job(1,'low level')
mid = Job(5,'mid level')
low2 = Job(1,'2nd low level')

print low == low2
print low >= mid
print low > mid

With @functools.total_ordering, User only need define function for ==, >. It will build other operator (<,<=,>= etc) automatically