This function is a decorator that can be used to define a factory function for with statement context managers, without needing to create a class or separate __enter__() and __exit__() methods.
@contextlib.contextmanagerfrom contextlib import contextmanager
@contextmanager
def managed_resource(*args, **kwds):
Code to acquire resource, e.g.:
resource = acquire_resource(*args, **kwds)
try:
yield resource
finally:
Code to release resource, e.g.:
release_resource(resource)>>> with managed_resource(timeout=3600) as resource:
... Resource is released at the end of this block,
... even if code in the block raises an exception