python记录_day18 反射 判断函数与方法

 1 class Foo:
 2     pass
 3 
 4 class Zi(Foo):
 5     pass
 6 
 7 class Sun(Zi):
 8     pass
 9 print(issubclass(Zi,Foo))  #True
10 print(issubclass(Zi,Sun))  # False

 1 class Animal:
 2     pass
 3 
 4 class Cat(Animal):
 5     pass
 6 
 7 class BosiCat(Cat):
 8     pass
 9 
10 c = Cat()    
11 b = BosiCat()
12 print(type(c))   #<class '__main__.Cat'>  会准确说出c是一种Cat,不会说c是一种Animal

class Animal:
    pass

class Cat(Animal):
    pass

class BosiCat(Cat):
    pass

c = Cat()
b = BosiCat()

print(isinstance(c , Cat))     #判断c 是否是一种Cat
print(isinstance(c,Animal))    #判断c 是否是一种Animal
print(isinstance(c,BosiCat))
 
结果：
True
True
False

 1 def func():
 2  pass
 3 print(func) # <function func at 0x10646ee18>  函数
 4 class Foo:
 5 
 6  def chi(self):
 7  print("我是吃")
 8 f = Foo()
 9 print(f.chi) # <bound method Foo.chi of <__main__.Foo object at
10 0x10f688550>>    方法

 1 class Foo:
 2      def chi(self):
 3          print("我是吃")
 4      @staticmethod
 5      def static_method():
 6          pass
 7      @classmethod
 8      def class_method(cls):
 9          pass
10 
11 f = Foo()
12 
13 print(f.chi) # <bound method Foo.chi of <__main__.Foo object at
14 0x10f688550>>
15 
16 print(Foo.chi) # <function Foo.chi at 0x10e24a488>
17 print(Foo.static_method) # <function Foo.static_method at 0x10b5fe620>
18 print(Foo.class_method) # bound method Foo.class_method of <class
19 '__main__.Foo'>>
20 
21 print(f.static_method) # <function Foo.static_method at 0x10e1c0620>
22 print(f.class_method) #<bound method Foo.class_method of <class
23 '__main__.Foo'>>            

 1 from types import FunctionType, MethodType
 2 
 3 class Car:
 4     def run(self): # 实例方法
 5         print("我是车, 我会跑")
 6 
 7     @staticmethod
 8     def cul():
 9         print("我会计算")
10 
11     @classmethod
12     def jump(cls):
13         print("我会jump")
14 
15 c = Car()
16 
17 实例方法:
18 #     1. 用对象.方法   方法
19 #     2. 类名.方法     函数
20 c = Car()
21  print(isinstance(c.run, FunctionType)) # False
22  print(isinstance(Car.run, FunctionType)) # True
23  print(isinstance(c.run, MethodType)) # True
24  print(isinstance(Car.run, MethodType)) # False
25 
26 # 静态方法 都是函数
27  print(isinstance(c.cul, FunctionType)) # True
28  print(isinstance(Car.cul, FunctionType)) # True
29  print(isinstance(c.cul, MethodType)) # False
30  print(isinstance(Car.cul, MethodType)) # False
31 
32 # 类方法都是方法
33 print(isinstance(c.jump, FunctionType)) # False
34 print(isinstance(Car.jump, FunctionType)) # False
35 print(isinstance(c.jump, MethodType)) # True
36 print(isinstance(Car.jump, MethodType)) # True