Entering to context manager with method of instance

Question

I would like to implement a context manager in my class that wouldn't create a new instance but would be invoked on an existing one using a certain method,

so that in usage, it would look as follows:

some_instance = SomeClass()

with some_instance.context_manager_method():
    ... # do something

is it possible?

Answer 1

Sure. You can use contextlib.contextmanager to create any context manager that you want. Here's a snippet:

from contextlib import contextmanager

class SomeClass:
    @contextmanager
    def context_manager_method(self):
        # setup
        yield
        # teardown