Raymond Hettinger <raymond.hettin...@gmail.com> added the comment:
The class is not documented to support __len__() or __bool__(), so this is not a bug. There is an empty() method provided for the purposes of testing whether a queue is empty or not. Likewise, there is a qsize() method for determining the current size. Note, these methods have a built in race condition -- the information may be out of date by the time it is used. In general, an EAFP approach is preferred for reliable behavior (i.e. call get() in a try/except to see whether an Empty exception is raised). FWIW, this module's API was designed by Guido a long time ago. Presumably, he had his reasons for choosing empty(), full(), and qsize() over the __len__() method. Once the API has been published and then become widely used, the time for debating his API decisions is over and we work with it as published. ---------- resolution: -> rejected stage: -> resolved status: open -> closed type: behavior -> enhancement versions: +Python 3.8 -Python 3.7 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue34180> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
