python __getattr__ help
- by Stefanos Tux Zacharakis
Reading a Book, i came across this code...
# module person.py
class Person:
def __init__(self, name, job=None, pay=0):
self.name = name
self.job = job
self.pay = pay
def lastName(self):
return self.name.split()[-1]
def giveRaise(self, percent):
self.pay = int(self.pay *(1 + percent))
def __str__(self):
return "[Person: %s, %s]" % (self.name,self.pay)
class Manager():
def __init__(self, name, pay):
self.person = Person(name, "mgr", pay)
def giveRaise(self, percent, bonus=.10):
self.person.giveRaise(percent + bonus)
def __getattr__(self, attr):
return getattr(self.person, attr)
def __str__(self):
return str(self.person)
It does what I want it to do, but i do not understand the __getattr__ function in the Manager class. I know that it Delegates all other attributes from Person class. but I do not understand the way it works. for example why from Person class? as I do not explicitly tell it to. person(module is different than Person(class)
Any help is highly appreciated :)
