How to call a method of an object given by its name as string?

I have a python3 object (class instance), generated by an

myObj = myClass()

line. I have also a myMethodName string:

myMethodName = "exampleName"

. How can I call a method of myObj named by myMethodName? Thus, in this case, I want to call myObj.exampleName, which is coming from like a getAttr(myObj, myMethodName).

Unfortunately, a naive solution refered by the python docs (for example, here) gives my only a KeyError or AttributeError.

This fails on that myObj doesn't have a method method:

method = getAttr(myObj, myMethodName)
myObj.method(param)

This fails on that myMethodName has more of fewer arguments:

method = getAttr(myObj, myMethodName)
method(myObj, param)

Calling simply

method = getAttr(myObj, myMethodName)
method(param)

which would be the most logical, gives

TypeError: exampleName() takes 1 positional argument but 2 were given

So, how can I do this?

I use python 3.6, if it matters.