It's not strictly necessary for Progress objects to be Threads, as none of the Thread APIs are actually used. Rather, Progress must only be an object which implements set_meta and update methods.
To support (optional) type checking of Progress, this also adds a Progress protocol, which consumers may choose (but are not required) to subclass.
balamurugana
commented
9 months ago
It's not strictly necessary for
Progressobjects to be Threads, as none of theThreadAPIs are actually used. Rather,Progressmust only be an object which implementsset_metaandupdatemethods.To support (optional) type checking of
Progress, this also adds aProgressprotocol, which consumers may choose (but are not required) to subclass.