1.python类的定义

使用class语句定义一个类，class之后为类的名称并以冒号结尾，

如下实例:

class ClassName:

   'Optional class documentation string'#类文档字符串

   class_body  #类体

类的帮助信息可以通过ClassName.__doc__查看。

class_body 由类成员，方法，数据属性组成。

2.创建老师类，类成员，方法，属性。

代码示例

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#!/usr/bin/python

class Teacher:
   'Common base class for all teacher'
   teacherCount = 0

   def __init__(self, name, age):
      self.name = name
      self.age = age
      Teacher.teacherCount += 1
   
   def displayCount(self):
     print "Total Teacher %d" % Teacher.teacherCount

   def displayTeacher(self):
      print "Name : ", self.name,  ", Age: ", self.age

"This would create first object of Teacher class"
t1 = Teacher("张明", 24)
"This would create second object of Teacher class"
t2 = Teacher("李海", 30)
t1.displayTeacher()
t2.displayTeacher()
print "Total Teacher %d" % Teacher.teacherCount 

"添加一属性address"
t1.address = "北京市朝阳区"
print "%s 居住在%s" % (t1.name,t1.address)

"修改一属性address"
t1.address = "北京市海淀区"
print "%s 搬家到%s" % (t1.name,t1.address)

"删除属性address"
del t1.address

执行情况

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    Name :  张明 , Age:  24
    Name :  李海 , Age:  30
    Total Teacher 2
    张明 居住在北京市朝阳区
    张明 搬家到北京市海淀区