Python - Call base class Constructors

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Introduction

Add customization of constructor in a subclass

Demo

class Person: 
    def __init__(self, name, job=None, pay=0): 
        self.name = name #  w  w w .ja va2s . c  o  m
        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 __repr__(self): 
        return '[Person: %s, %s]' % (self.name, self.pay) 

class Manager(Person): 
    def __init__(self, name, pay):                     # Redefine constructor 
        Person.__init__(self, name, 'mgr', pay)        # Run original with 'mgr' 
    def giveRaise(self, percent, bonus=.10): 
        Person.giveRaise(self, percent + bonus) 

if __name__ == '__main__': 
    bob = Person('Bob Smith') 
    sue = Person('Sue Jones', job='dev', pay=100000) 
    print(bob) 
    print(sue) 
    print(bob.lastName(), sue.lastName()) 
    sue.giveRaise(.10) 
    print(sue) 
    tom = Manager('Tom Jones', 50000)                   # Job name not needed: 
    tom.giveRaise(.10)                                  # Implied/set by class 
    print(tom.lastName()) 
    print(tom)

Result

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