hasattr,getattr,setattr,delattr.
检查成员,获取成员,设置成员,删除成员.
class Foo():
def __init__(self):
self.name = 'wupeiqi'
def func(self):
return 'func'
obj = Foo()
检查是否含有成员
print(hasattr(obj,'name')) #结果Ture
print(hasattr(obj,'func')) #结果Ture
print(hasattr(obj,'nice')) #结果False
获取成员
print(getattr(obj,'name')) #结果wupeiqi
print(getattr(obj,'func')()) #结果func
设置成员
setattr(obj,'age',18)
print(getattr(obj,'age')) #结果18
setattr(obj,'nice',lambda x:x**2)
print(getattr(obj,'nice')(2)) #结果4
删除成员
delattr(obj,'name')
print(getattr(obj,'name')) #报错,原因'Foo'对象没有属性'name'('Foo' object has no attribute 'name')
delattr(obj,'func')
print(getattr(obj,'func')) #报错