contextlib_contextmanager_decorator_for_with_statement_resource_management.py

1from contextlib import contextmanager
2
3@contextmanager
4def managed_resource(*args, **kwds):
5    # Code to acquire resource, e.g.:
6    resource = acquire_resource(*args, **kwds)
7    try:
8        yield resource
9    finally:
10        # Code to release resource, e.g.:
11        release_resource(resource)
12
13with managed_resource(timeout=3600) as resource:
14    # Resource is released at the end of this block,
15    # even if code in the block raises an exception
16    pass