[issue43198] Operations on sets more than hundred times less efficient with python3.9 than with previous versions

2021-03-09 Thread Eric Martin
Eric Martin added the comment: Thank you for letting us know, I am actually not surprised the issue would bugger you and you would change your mind... Thinking further about it and experimenting further, I thought it might not be such an edge case and there could be a significant cost in

[issue43198] Operations on sets more than hundred times less efficient with python3.9 than with previous versions

2021-02-11 Thread Eric Martin
Eric Martin added the comment: Many thanks Raymond for these insights and thorough explanations, I appreciate it very much. Your conclusions are of course most reasonable. For me, I cannot say that it is a real issue in practice. I have teaching notes in which I illustrate with plots the

[issue43198] Operations on sets more than hundred times less efficient with python3.9 than with previous versions

2021-02-10 Thread Eric Martin
New submission from Eric Martin : Run on a MacBook Pro (15-inch, 2019) 2.3 GHz 8-Core Intel Core i9 16 GB 2400 MHz DDR4 Python 3.8.7 (default, Dec 24 2020, 19:07:18) [Clang 12.0.0 (clang-1200.0.32.27)] on darwin Type "help", "copyright", "credi

[issue34281] "Go to Line" broken on OS X

2018-07-30 Thread Eric Martin
New submission from Eric Martin : After entering a line number, clicking OK brings to the foreground and makes active the first hidden window (in the simplest case where we have just one window for a .py file and the Shell window, the former being in the foreground, clicking OK brings the