Handling TypeError when using functools.partial with a method in Python 3.10
I'm writing unit tests and I tried several approaches but none seem to work. Hey everyone, I'm running into an issue that's driving me crazy... After trying multiple solutions online, I still can't figure this out. I'm currently working on a project where I need to use `functools.partial` to create a partially applied method of a class. However, I'm working with a `TypeError` when I try to call the resulting function. The scenario seems to stem from how I'm passing the method and its arguments. Here's a simplified version of my code: ```python from functools import partial class MyClass: def greet(self, name): return f'Hello, {name}!' # Creating a partial function partial_greet = partial(MyClass.greet, 'Alice') # Trying to call the partial function result = partial_greet() ``` When I run this, I get the following behavior: ``` TypeError: greet() missing 1 required positional argument: 'name' ``` I thought that by using `partial`, I could effectively 'freeze' the `name` argument to 'Alice', but it seems that the method is expecting the instance of `MyClass` as the first argument. The `greet` method is not a static method, so I need to provide an instance, right? I tried creating an instance of `MyClass` and using it like this: ```python my_instance = MyClass() partial_greet = partial(my_instance.greet, 'Alice') ``` But now I get a different behavior: ``` TypeError: greet() missing 1 required positional argument: 'name' ``` What am I doing wrong? How can I correctly use `functools.partial` with instance methods in Python 3.10? Any insights into this behavior and best practices for handling such cases would be greatly appreciated! I'm working on a web app that needs to handle this. Any help would be greatly appreciated! This is part of a larger web app I'm building. What's the correct way to implement this? I recently upgraded to Python stable. What's the correct way to implement this? What's the correct way to implement this?