[issue36765] Invalid grammar for f_expression
Kasra Vand added the comment: Due to the discussion in following SO question https://stackoverflow.com/questions/55933956/what-does-a-star-asterisk-do-in-f-string/55934472#55933956 and the inconsistency of the source behaviour with the documentation I think using `"*" or_expr` for f_expression is wrong or at least not what it meant to be and very vague. I was wondering if there's any reason for using `"*" or_expr` instead of let's say just `expr` which I think is what the `or_expr` identifier is intended to be. -- ___ Python tracker <https://bugs.python.org/issue36765> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue36765] Invalid grammar for f_expression
New submission from Kasra Vand : Due to the discussion in following SO question https://stackoverflow.com/questions/55933956/what-does-a-star-asterisk-do-in-f-string/55934472#55933956 and the inconsistency of the source behaviour with the documentation I think using `"*" or_expr` for f_expression is wrong or at least not what it meant to be and very vague. I was wondering if there's any reason for using `"*" or_expr`. -- assignee: docs@python components: Documentation messages: 341186 nosy: Kasra Vand, docs@python priority: normal severity: normal status: open title: Invalid grammar for f_expression type: behavior versions: Python 3.7 ___ Python tracker <https://bugs.python.org/issue36765> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue33344] Use logical negation of integers directly in arithmatic propostions and equations
Change by Kasra Vand <kasraav...@gmail.com>: -- stage: -> resolved status: open -> closed ___ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue33344> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue33344] Use logical negation of integers directly in arithmatic propostions and equations
Kasra Vand <kasraav...@gmail.com> added the comment: I think this will contradict to Python's operators precedence. What I mentioned seems like you're passing the number as an argument to `not`, and this is while `not` is not a function. There is an `operator.not_` function that does the same job as expected though. Now I see why it's not efficient and wise to do so. This is violation of operators precedence. -- ___ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue33344> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue33344] Use logical negation of integers directly in arithmatic propostions and equations
Kasra Vand <kasraav...@gmail.com> added the comment: Thanks, Indeed. But my question is more about the syntax and why it's not that straight? The reasons for that is because Python is known as a scientific programming language and many people come with mathematical background and may want to use this kind of syntax. So is it possible to add this feature? -- ___ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue33344> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue33344] Use logical negation of integers directly in arithmatic propostions and equations
Kasra Vand <kasraav...@gmail.com> added the comment: This may seem not very useful while except 0 for other numbers it returns False but one may want to use another proposition inside `not` that can use either 0 or a nonzero number. Also, in this case we can form more comprehensive logical propositions. -- ___ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue33344> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue33344] Use logical negation of integers directly in arithmatic propostions and equations
New submission from Kasra Vand <kasraav...@gmail.com>: Logical Negation of integers in Python always returns a Boolean result which can be achieve using `not`. Sometimes it's necessary to use this result directly in a proposition within a list comprehension (mostly). But if we use `not` directly in such arithmatic proposition it will raise a `SyntaxError. ``` In [46]: 3 + not(4) File "", line 1 3 + not(4) ^ SyntaxError: invalid syntax ``` Isn't that possible to make this work for integers in future releases? I was more curious to know what would be the drawbacks of such feature if there are any? -- components: Interpreter Core messages: 315688 nosy: Kasra Vand priority: normal severity: normal status: open title: Use logical negation of integers directly in arithmatic propostions and equations type: behavior versions: Python 3.7 ___ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue33344> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
