Adding a Method to an Existing Object Instance

Question

I\'ve read that it is possible to add a method to an existing object (i.e., not in the class definition) in Python.

I understand that it\'s not always good to do so

Answer 1

If it can be of any help, I recently released a Python library named Gorilla to make the process of monkey patching more convenient.

Using a function needle() to patch a module named guineapig goes as follows:

import gorilla
import guineapig
@gorilla.patch(guineapig)
def needle():
    print("awesome")

But it also takes care of more interesting use cases as shown in the FAQ from the documentation.

The code is available on GitHub.