Mailman 3 December 2014 - Python-ideas

Multi-index Containers Library
by SF Markus Elfring 08 Dec '14

08 Dec '14

Hello, I find a data structure like it is provided by the "Boost Multi-index Containers Library" interesting for efficient data processing. http://www.boost.org/doc/libs/1_57_0/libs/multi_index/doc/index.html How are the chances to integrate a class library with similar functionality into the Python software infrastructure? https://bugs.python.org/issue22957 Regards, Markus

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Asynchronous IO ideas for Python
by Paul Colomiets 06 Dec '14

06 Dec '14

Hi, I've written an article about how I perceive the future of asynchronous I/O in Python. It's not something that should directly be incorporated into python now, but I believe it's useful for python-ideas list. https://medium.com/@paulcolomiets/the-future-of-asynchronous-io-in-python-c… And a place for comments at Hacker News: https://news.ycombinator.com/item?id=8662782 I hope being helpful with this writeup :) -- Paul

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Improved support for prepared SQL statements
by SF Markus Elfring 01 Dec '14

01 Dec '14

Hello, An interface for parameterised SQL statements (working with placeholders) is provided by the execute() method from the Cursor class at the moment. https://docs.python.org/3/library/sqlite3.html#sqlite3.Cursor.execute I assume that the "SQL Statement Object" from the SQLite C interface is reused there already. http://sqlite.org/c3ref/stmt.html I imagine that it will be more efficient occasionally to offer also a base class like "prepared_statement" so that the parameter specification does not need to be parsed for every passed command. I suggest to improve corresponding preparation and compilation possibilities. https://bugs.python.org/issue22956 Regards, Markus

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Fast context creation
by Stefano Borini 01 Dec '14

01 Dec '14

I have a situation where, no matter how the routine ends, I need to return the focus to a widget. It would be rather clever to do this with a context, but I would expect something like this to be a possible strategy with contextlib.context(enter=None, exit=lambda *args: my_widget.setFocus()): do what I need to do as far as I know, at the moment it's not possible. Am I right? I think it would be an easy and practical addition to the contextlib module to quickly register two routines for enter and exit.

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