Python类的反射实例

1、打开python开发工具IDLE，新建‘clsref.py文件’，并写代码如下：class Test(): def __init__(self,name): self._name = name def test1(self): print ('test1')t1 = Test('hello')print (globals())

3、利用globals(拘七呷憎)函数实现反射，代码如下：class Test(): def __init__(self,name): self._name = name def t髫潋啜缅est1(self): print ('test1')t1 = Test('hello')print (globals())clz = 'Test'fn = 'test1't2 = globals()[clz]('world')fun = getattr(t2,fn)fun()globals()通过类名的key，定位到类地址，然后实例化t2对象，getattr获取对象的方法

5、也可以创建对象后直接使用getattr方法，代码如下：class Test(): def __init__(self,name): self._name = name def test1(self): print ('test1')t1 = Test('hello')f1=getattr(t1,'test1')f1()clz = 'Test'fn = 'test1't2 = globals()[clz]('world')fun = getattr(t2,fn)fun()

7、判断函数是豸阏恢闲否存在hasattr()方法，代码如下：class Test(): def __init__(self,name): self._name = name 颊俄岿髭def test1(self): print ('test1')t1 = Test('hello')print (hasattr(t1,'test1'))f1=getattr(t1,'test1')f1()clz = 'Test'fn = 'test1't2 = globals()[clz]('world')fun = getattr(t2,fn)fun()