Python:如何使用来自父级的isinstance来确定它是否是特定的子级
我有几节课Python:如何使用来自父级的isinstance来确定它是否是特定的子级,python,inheritance,recursion,isinstance,Python,Inheritance,Recursion,Isinstance,我有几节课 class Parent(): def DoThing(): if isinstance(self, 'child1'): DoSomething() elif: DoSomethingElse() import Parent class Child1(Parent): def DoThing(): #Do some things here super.D
class Parent():
def DoThing():
if isinstance(self, 'child1'):
DoSomething()
elif:
DoSomethingElse()
import Parent
class Child1(Parent):
def DoThing():
#Do some things here
super.DoThing()
import Parent
class Child2(Parent)
def DoThing():
#Do other things
super.DoThing()
我遇到的问题是,我想检查类的实例是父类本身还是子类之一
失败的地方在于,在解释父对象时,进程失败,因为解释器不知道Child1是什么。我无法导入Child1,因为这会导致递归
通过在parent and child1中定义一个方法,我创建了一个解决方案
def IsChild1Instance(self):
return True/False
有更好更干净的方法吗?您的父类不应该关心子类。请改用不同的方法实现:
class Parent:
def do_thing(self):
self.do_something_delegated()
def do_something_delegated(self):
pass
class Child1(Parent):
def do_something_delegated(self):
# do child1 specific things
class Child2(Parent)
def do_something_delegated(self):
# do child2 specific things
您的父类不应该关心子类。请改用不同的方法实现:
class Parent:
def do_thing(self):
self.do_something_delegated()
def do_something_delegated(self):
pass
class Child1(Parent):
def do_something_delegated(self):
# do child1 specific things
class Child2(Parent)
def do_something_delegated(self):
# do child2 specific things