如何在 static/class 方法中访问 class 方法？

Question

` class A（对象）： x = 0

def say_hi(self):
    pass

@staticmethod
def say_hi_static():
    pass

@classmethod
def say_hi_class(cls):
    pass

def run_self(self):
    self.x += 1
    print(self.x) # outputs 1
    self.say_hi()
    self.say_hi_static()
    self.say_hi_class()

@staticmethod
def run_static():
    print(A.x)  # outputs 0
    # A.say_hi() #  wrong
    A.say_hi_static()
    A.say_hi_class()

@classmethod
def run_class(cls):
    print (cls.x)# outputs 0
    # cls.say_hi() #  wrong
    cls.say_hi_static()
    cls.say_hi_class()

`

A.run_static() 0

A.run_class() 0 a=A()

a.run_class() 0

a.run_static() 0

以上代码解释了如何在静态和 class 方法中访问 class 变量... 如果我想在静态和 class 方法中访问方法的变量怎么办

Answer 1

您可能想将函数 mysub 定义为 staticmethod，这样您就可以将其用作 "independent" 函数：

class Myclass1(object):
    def __init__(self,d):#, dict_value):
        self.d=d
    def myadd(self):
        b=2
        return b

    @staticmethod
    def mysub(u):  #Note that self is not an argument!
        a=u
        print('A value:',a)
        return a     


Instance=Myclass1(1)    # Created an instance
Instance.mysub(1)

# ('A value:', 1)
# Out[42]: 1

如何在 static/class 方法中访问 class 方法？

How to access a class METHODS within static/class methods?

static-methods

class

instance

class-method

python-3.5