Python 类 setattr、getattr、hasattr 的使用

#coding=utf-8

class Employee:

  '所有员工的基类'

  empCount = 0

  def __init__(self, name, salary):

    self.name = name

    self.salary = salary

    Employee.empCount += 1

  def displayCount(self):

    print ("Total Employee %d" % Employee.empCount)

  def displayEmployee(self):

    print ("Name : ", self.name,  "\nSalary: ", self.salary)

Xiaoxiao = Employee('Xiaoxiao', 2000)

setattr(Xiaoxiao, 'age', 21)

Tiny = Employee("Tiny", 5000)

#setattr(Tiny, 'age', 23)

print ("实例 Employee 类的第一个对象 Xiaoxiao ");

print ('Xiaoxiao 是否存在age属性：',hasattr(Xiaoxiao,'age'))

Xiaoxiao.displayEmployee(); 

print("Age: ",getattr(Xiaoxiao,'age', 'not find'));

print ("\n")

print ("实例 Employee 类的第二个对象 Tiny")

print ('Tiny 是否存在age属性：',hasattr(Tiny,'age'))

Tiny.displayEmployee()

print("Age: ",getattr(Tiny,'age', 'not find'));

print ("\n")

print ("Total Employee number: %d" % Employee.empCount)

print ("\n")