python - 如何将函数动态添加到类并保留函数在类中返回的内容？

Question

fun在我的包中，我有各种函数（我现在想创建一个可以收集函数返回 ( Collector) 的类。我希望这些函数成为Collector该类的方法，以便可以从其命名空间调用它们——虽然不是直接调用，而是通过我调用的子类调用run。

因此，在使用时，collector.run.fun()我想Collector捕获 的输出，fun以便它可用于（在Collector的命名空间中）以进行进一步处理（例如，通过运行更多功能）。

如何动态地将函数添加到类中并保留它们在类中返回的内容？

这是一些代码。显然这是错误的 -setattr只会附加fun到Collector.run......我不知道如何继续：

## package structure
## /my_pgk/module.py
## /my_pgk/sub/submodule.py

## many more like this in submodule.py:
def fun(add="default", **kwargs):
    if "base" in kwargs:
        add = kwargs.get("base") + " " + add 
    if "more" in kwargs:
        add = add + " " + kwargs.get("more")
    return add


## in module.py:
from sub import submodule

class Collector(object):
    def __init__(self, base, **kwargs):

        self.base = base
        if "more" in kwargs and not kwargs.get("more") == "":
            self.more = kwargs.get("more")

        class run(object):
            def __init__ (self):
                        
                ## dyanmically add class methods (this is wrong)
                for key, value in submodule.__dict__.items(): 
                    if callable(value) and not key.startswith('_'):    
                        setattr(self, key, value)                         
            
        self.run = run()     
        
        ## ENTER SOME PYTHON MAGIC HERE THAT ALLOWS ME TO RUN FUNCTIONS AS 
        ## CLASS METHODS AND CATCH THEIR OUTPUT FOR FURTHER PROCESSING:
            
        ## self.add = ...SOMEHOW CATCH METHOD OUTPUT...
        ## self.final = ", and ".join([self.base, self.add, self.more])
                
        
    def out(self):
        print(self.final)
    

## in practice:
col = Collector(base="(1) this is the start", 
          more="(3) even more is provided")
col.run.fun("(2) this is what I add")

col.out()
## should give 
# (1) this is the start, and (2) this is what I add, and (3) even more is provided

标签： pythonclassmethodsdynamic