參見英文答案 >
Adding a Method to an Existing Object Instance 17個
如果我定義一個小python程式
class a():
def _func(self):
return "asdf"
# Not sure what to resplace __init__ with so that a.func will return asdf
def __init__(self, *args, **kwargs):
setattr(self, 'func', classmethod(self._func))
if __name__ == "__main__":
a.func
我收到回溯錯誤
Traceback (most recent call last):
File "setattr_static.py", line 9, in
a.func
AttributeError: class a has no attribute 'func'
我想弄清楚的是,如何在不執行個體化對象的情況下動态地将類方法設定為類？
編輯：
這個問題的答案是
class a():
pass
def func(cls, some_other_argument):
return some_other_argument
setattr(a, 'func', classmethod(func))
if __name__ == "__main__":
print(a.func)
print(a.func("asdf"))
傳回以下輸出
>
asdf