class A(object): @staticmethod def open(): return 123 @staticmethod def proccess(): return 456 switch = { 1: open, 2: proccess, } obj = A.switch[1]() 当我运行它时,我不断收到错误消息: TypeError: 'staticmethod' object is not callable 如何解决? 原文由 Ramin Farajpour Cami 发布...
@classmethod, @staticmethod和@property这三个装饰器的使用对象是在类中定义的函数。下面的例子展示了它们的用法和行为: class MyClass(object): def __init__(self): self._some_property = "properties are nice" self._some_other_property = "VERY nice" def normal_method(*args,**kwargs): print "c...
0 TypeError: 'module' object is not callable python class method 0 NameError: name 'MyClass' is not defined 5 Python Module and Class - AttributeError: module has no attribute 0 NameError: class name is not defined, despite being imported 0 "'module' object is not callable" error ...
Such objects (as well as classmethod objects, functions and property objects) are only bound through the descriptor protocol, by accessing the name as an attribute on the class or an instance. Directly accessing the staticmethod objects in the class body is not an attribute access. Either create...
classClass(object):@function_wrapper @classmethod defcmethod(cls):pass>>>Class.cmethod()Traceback(most recent call last):File"classmethod.py",line15,in<module>Class.cmethod()File"classmethod.py",line6,in_wrapperreturnwrapped(*args,**kwargs)TypeError:'classmethod'object is not callable ...
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classClass(object):@function_wrapperdefmethod(self):pass@classmethoddefcmethod(cls):pass@staticmethoddefsmethod():pass 首先,就算在你的装饰器里用上了functools.wraps()或functools.update_wrapper(),当你把这个装饰器放在@classmethod或@staticmethod前面时,依然会得到一个异常。这是因为依然有一些属性并未被funct...
TypeError:'classmethod'objectisnotcallable 这是因为包装器认定被包装的函数(@classmethod)是可以直接被调用的,但事实并不一定是这样的。被包装的函数实际上可能是描述符(descriptor),意味着为了使其可调用,该函数(描述符)必须被正确地绑定到某个实例上。关于描述符的定义,可以参考https://docs.python.org/2/howto...
@classmethod @classmethod是一个函数修饰符,它表示接下来的是一个类方法,类方法的第一个参数cls class Test(object): # 定义类Test的属性 name = 'python' content = '人生苦短,我用python!' @classmethod # 类方法访问Test类的属性 def class_method(cls): ...
stu1.get_student_info() # TypeError: 'NoneType' object is not callable stu1.get_student_info # 姓名: 当打之年,学号: 001,共 4 门课程 此时的get_student_info函数被伪装成实例属性(类似变量)而不在是函数,所以通过函数调用的方式会报错,可直接通过属性调用。