>>> class MyData(object): //类作为名称空间容器 ... pass ... >>> mathObj = MyData() >>> mathObj.x=4 >>> mathObj.y=5 >>> mathObj.x+mathObj.y 9 >>> >>> mathObj.x*mathObj.y 20

self(实例对象)参数自动由解释器传递

类中方法只能通过实例来调用

类中静态变量可以直接使用

实例仅拥有数据属性

在类属性可变的情况下

>>> class Foo(object): ... x = {
   2003:'poe2'} ... >>> foo = Foo() >>> foo.x {
   2003: 'poe2'} >>> foo.x[2004] = 'valid path' >>> foo.x {
   2003: 'poe2', 2004: 'valid path'} >>> Foo.x {
   2003: 'poe2', 2004: 'valid path'} >>> del foo.x Traceback (most recent call last): File "
     
      ", line 1, in 
      
        AttributeError: 'Foo' object attribute 'x' is read-only
      
     

绑定方法与非绑定方法

非绑定方法:主要场景是在派生一个子类，而且要覆盖父类的方法，需要调用这个父类中想要覆盖的构造方法

http://blog.sina.com.cn/s/blog_3fe961ae0100kew0.html

http://cowboy.1988.blog.163.com/blog/static/75105798201091141521583/

>>> class TestMethod: ... def func(): ... print "hehe" ... >>> test_method = TestMethod() >>> test_method.func() Traceback (most recent call last): File "
     
      ", line 1, in 
      
        TypeError: func() takes no arguments (1 given) >>> class TestStaticMethod: ... def foo(): ... print 'calling static method foo()' ... foo = staticmethod(foo) ... >>> class TestClassMethod: ... def foo(cls): ... print 'calling class method foo()' ... print 'foo() is part of class:',cls.__name__ ... foo = classmethod(foo) ... >>> >>> >>> >>> Test_foo = TestStaticMethod() >>> Test_foo.foo() calling static method foo()