[issue39566] inspect.Signature.__init__ asks for parameters as dict but treats as list
New submission from Nicholas Matthews : The class inspect.Signature asks for parameters of type dict in python 3.8+ (and OrderedDict in earlier versions); however the __init__ function iterates over parameters as if it were a list, specifically: for param in parameters: name = param.name kind = param.kind ... Either the docstring should be changed to specify Sequence / List, or the implementation should be changed to iterate over the values of parameters: for param in parameters.values(): ... (https://github.com/python/cpython/blob/2cca8efe46935c39c445f585bce54954fad2485b/Lib/inspect.py#L2734) -- messages: 361461 nosy: Nicholas Matthews priority: normal severity: normal status: open title: inspect.Signature.__init__ asks for parameters as dict but treats as list type: behavior versions: Python 3.8 ___ Python tracker <https://bugs.python.org/issue39566> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue39566] inspect.Signature.__init__ asks for parameters as dict but treats as list
Nicholas Matthews added the comment: I originally filed an issue believing the documentation for inspect.Signature was incorrect; I now think I misread the documentation. (Apologies, I'm used to a different docstring format) -- ___ Python tracker <https://bugs.python.org/issue39566> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue36947] Fix 3.3.3.1 Metaclasses Documentation
New submission from Nicholas Matthews : Currently the final sentence of the second paragraph reads: "In the following example, both MyClass and MySubclass are instances of Meta:" It should read something like: "In the following example, both MyClass and MySubclass have the metaclass Meta, and new instances will be created using Meta:" Classes are created by their metaclass, but cannot be said to be instances of their metaclass, correct? -- components: Library (Lib) messages: 342723 nosy: Nicholas Matthews priority: normal severity: normal status: open title: Fix 3.3.3.1 Metaclasses Documentation type: behavior versions: Python 3.7 ___ Python tracker <https://bugs.python.org/issue36947> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue36947] [Good first issue] Fix 3.3.3.1 Metaclasses Documentation
Nicholas Matthews added the comment: Ok, I will create a PR soon and update the issue. -- ___ Python tracker <https://bugs.python.org/issue36947> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue36947] [Good first issue] Fix 3.3.3.1 Metaclasses Documentation
Nicholas Matthews added the comment: Thanks for the clarification. For the first point on the correctness of the original text, that makes sense, could you link me to any relevant documentation for further reading? On the second point "Meta modifies the creation of the classes themselves, not instances of the classes." I think this is not 100% correct. When you create an instance of a class via "instance = MyClass()", the `__call__` method of the metaclass is invoked, so metaclasses can control both class definition and instance creation. -- ___ Python tracker <https://bugs.python.org/issue36947> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
