CODEWITHSUNDEEP
pythonclass
Mencia
Mencia

Reputation: 898

Python: define class object that is list of the other methods in the class

I have the following class:

class Math():

    def double(self, x):
        return 2*x

    def triple(self, x):
        return 3*x

Now, I want to get the list of methods defined in the class. I can do this in the following way:

method_list = [func for func in dir(Math) if callable(getattr(Math, func)) and not func.startswith("__")]

Now, I would like method_list itself to be an object of the class Math. It doesn't work to simply define it (as it is now at least) inside the class. How can I do this?

Upvotes: 1

Views: 44

Answers (2)

jsbueno
jsbueno

Reputation: 110756

class Math():

    def double(self, x):
        return 2*x

    def triple(self, x):
        return 3*x

    @classmethod 
    def method_list(cls):
       return [func for func in dir(cls) if callable(getattr(cls, func)) and not func.startswith("__") and func != "method_list"]

usage example at interactive session:

In [123]: Math.method_list()                                                                                                                                        
Out[123]: ['double', 'triple']

Upvotes: 2

quamrana
quamrana

Reputation: 39422

You can use a decorator because the class must be fully defined for python to pass the class to the decorator.

def addMethods(cls):
    method_list = [func for func in dir(cls) if callable(getattr(cls, func)) and not func.startswith("__")]
    cls.method_list = method_list
    return cls

@addMethods
class Math():
    pass

Upvotes: 0

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