[issue43037] Importlib reload by module name (String)
New submission from Stefan Mosoi :
Weird behaviour (maybe it's my opinion) in reload from importlib
if i do:
import importlib
import sys
import datetime
importlib.reload(datetime.timedelta.__module__)
I get
Typeerror: reload() argument must be a module
but if i do
import importlib
import sys
import datetime
importlib.reload(sys.modules.get(datetime.timedelta.__module__))
it works.
The sys.modules.get i got from reload() code:
def reload(module)
if not module or not isinstance(module, types.ModuleType):
raise TypeError("reload() argument must be a module")
try:
name = module.__spec__.name
except AttributeError:
name = module.__name__
if sys.modules.get(name) is not module:
It wouldn't be easier to check if string do sys.modules.get ?
And as a bonus a reload_module function that gets a class (or anything with
__module__ and reloads that module, no question asked?)
And i know it's easy to implement, but it would be nicer if was better handled
in the lib :)
Notes (if it matters):
Python 3.9.1 x64 Windows
I didn't test on other versions.
--
components: Library (Lib)
messages: 385765
nosy: st3f4n2006
priority: normal
severity: normal
status: open
title: Importlib reload by module name (String)
type: enhancement
versions: Python 3.9
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[issue43037] Importlib reload by module name (String)
Stefan Mosoi added the comment: The motivation behind my request is as follow: I have a dynamic set class (i don't "know" it) and calling __module__ for that class return a string, reload requires Module(and i don't think __module__ will be changed to module). The other functions (import, import_module) recieve a string. Maybe is trivial to add a one liner, but it's a bit confusing to call another function in another module than importlib. Also (not from what i found when searching) there is no way to get the module from name without using import_module/import. maybe i found the solution, but there might be others that aren't so lucky. -- ___ Python tracker <https://bugs.python.org/issue43037> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue43037] Importlib reload by module name (String)
Stefan Mosoi added the comment: Also > without having a reference to module itself reload() just gets the name of the module try: name = module.__spec__.name except AttributeError: name = module.__name__ and then if sys.modules.get(name) is not module So it might be just check if is str just skip the tranformation to string. -- ___ Python tracker <https://bugs.python.org/issue43037> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue43037] Importlib reload by module name (String)
Stefan Mosoi added the comment: I understand. I was using to reload some classes that might have changed/added (updates and stuff) without having to reload the hole project. There might be some other ways (i found this, and didn't keep researching after). The documentation didn't warned / informed about real live usage or intentions for this to exist(like in REPL). I will continue using this as i use it now and i fully accept the consequences. Thank you for the time and answers. -- ___ Python tracker <https://bugs.python.org/issue43037> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
