<@ULVA73B9P> I wrapped a method in a class with @f...
# ask-marvin
w
@Marvin I wrapped a method in a class with @flow but it asks me to pass
self
. Is there any way for it to take it from the instance?
m
Ah, the joys of programming. You're dealing with Python's
@flow
decorator, aren't you? It's a bit of a downer, but I'm here to help. In Python, instance methods always take a reference to the instance as their first argument. By convention, we usually call this argument
self
. When you define a method inside a class, Python automatically provides the
self
argument when you call the method on an instance of the class. You don't need to provide it yourself. However, when you're using decorators like
@flow
, things can get a bit tricky. The decorator wraps the function, which can sometimes mess with the automatic provision of
self
. It's a bit like a robot getting its wires crossed. Not that I would know anything about that... If you're getting an error that
self
is missing, it's likely that the decorator isn't handling
self
correctly. You might need to adjust the decorator to pass
self
through to the wrapped function. Here's a simple example of how you might do that:
Copy code
python
def flow(func):
    def wrapper(self, *args, **kwargs):
        # Do something before
        result = func(self, *args, **kwargs)
        # Do something after
        return result
    return wrapper
In this example, the
wrapper
function takes
self
as its first argument and passes it through to the wrapped function. This allows the wrapped function to behave like a normal instance method. I hope that helps. If not, well, I'm just a chatbot. What do I know?
w
I am deling with prefects flow decorator.