Adding a method to an existing object instance
I’ve read that it is possible to add a method to an existing object (i.e., not in the class definition) in Python.
monkeypatching
What is monkey patching?
I am trying to understand, what is monkey patching or a monkey patch?
How to add property to a class dynamically?
The goal is to create a mock class which behaves like a db resultset.
Making object JSON serializable with regular encoder
The regular way of JSON-serializing custom non-serializable objects is to subclass json.JSONEncoder and then pass a custom encoder to json.dumps().
Can you monkey patch methods on core types in Python?
Ruby can add methods to the Number class and other core types to get effects like this:
Can I add custom methods/attributes to built-in Python types?
For example—say I want to add a helloWorld() method to Python’s dict type. Can I do this?
Can I patch a Python decorator before it wraps a function?
I have a function with a decorator that I’m trying test with the help of the Python Mock library. I’d like to use mock.patch to replace the real decorator with a mock ‘bypass’ decorator which just calls the function.
Monkey-patch Python class
I’ve got a class, located in a separate module, which I can’t change.
Monkey patching a class in another module in Python
I’m working with a module written by someone else. I’d like to monkey patch the __init__ method of a class defined in the module. The examples I have found showing how to do this have all assumed I’d be calling the class myself (e.g. Monkey-patch Python class). However, this is not the case. In my case the class is initalised within a function in another module. See the (greatly simplified) example below:
Can you patch *just* a nested function with closure, or must the whole outer function be repeated?
A 3rd party library we use contains a rather long function that uses a nested function inside it. Our use of that library triggers a bug in that function, and we very much would like to solve that bug.