On 9/29/07, Terry Reedy email@example.com wrote:
"Joseph Maurer" firstname.lastname@example.org wrote in message news:email@example.com... | I'd like to see the reload feature of Python enhanced so it can replace the methods for existing class instances, references to methods, and references to functions.
I think would we could get farther by restricting concern to replacing class attributes so that existing class instances would use their new definitions.
As I understand, the problem is this. After somemod is imported, 'import somemod' simply binds 'somemod' to the existing module object, while 'reload somemod' replaces the module object with a new object with all new contents, while references to objects within the old module object remain as are.
Actually, the way reload works is that it takes the module object from sys.modules, and then re-initializes mod.__dict__ (this is why import loaders must use any pre-existing module's __dict__ when loading). So the module object itself is not replaced, it's just that it's __dict__ is mutated in-place.