
def __init__(self, name, age):
self.name = name
self.age = age
class worker(People):
def __init__(self,name,age,salary):
super(worker,self).__init__(name,age)
self.salary = salary
tom = People("Tom", 22)
print type(tom).__name__
#not a safe way, but no new object
tom.__class__=worker
print type(tom).__name__
tom.salary = 250
print tom.salary
#safe way, but create a new object
workerTom = worker("Tom", 22, 200)
tom.__dict__ = workerTom.__dict__
print type(tom).__name__
print tom.salary
Python中的input函数用于向用户提供一个输入的入口。input() 函数用于向用户生成一条提示,然后获取用户输入的内容。由于 input() 函数总会将用户输入的内容放入字符串中,因此用户可以
输入任何内容,input() 函数总是返回一个字符串。
例如如下程序:
msg = input("请输入你的值:")
print (type(msg))
print(msg)
运行该程序,我们输入一个整数,运行过程如下:
请输入你的值:2
<class 'str'>
2
无论输入哪种内容,input() 函数都返回字符串,程序总会将用户输入的内容转换成字符串。
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#!/usr/bin/pythonclass SchoolMember:
'''Represents any school member.'''
def __init__(self, name, age):
self.name = name
self.age = age
print'(Initialized SchoolMember: %s)'% self.name
def tell(self):
'''Tell my details.'''
print'Name:"%s" Age:"%s"'% (self.name, self.age),
class Teacher(SchoolMember):
'''Represents a teacher.'''
def__init__(self, name, age, salary):
SchoolMember.__init__(self, name, age)
self.salary = salary
print'(Initialized Teacher: %s)'% self.name
def tell(self):
SchoolMember.tell(self)
print'Salary: "%d"'% self.salary
class Student(SchoolMember):
'''Represents a student.'''
def __init__(self, name, age, marks):
SchoolMember.__init__(self, name, age)
self.marks = marks
print'(Initialized Student: %s)'% self.name
def tell(self):
SchoolMember.tell(self)
print'Marks: "%d"'% self.marks
t = Teacher('Mrs. Shrividya',40,30000)
s = Student('Swaroop',22,75)
members = [t, s]
for member in members:
member.tell()# works for both Teachers and Students
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