Comments on: Python Wishlist http://lucumr.pocoo.org/cogitations/2007/11/15/python-wishlist/ Armin Ronacher thinking Fri, 25 Jul 2008 13:00:11 +0000 http://wordpress.org/?v=2.2 By: Brynjar http://lucumr.pocoo.org/cogitations/2007/11/15/python-wishlist/#comment-865 Brynjar Thu, 29 Nov 2007 09:41:55 +0000 http://lucumr.pocoo.org/cogitations/2007/11/15/python-wishlist/#comment-865 Stackless python has coroutines Stackless python has coroutines

]]> By: Armin Ronacher http://lucumr.pocoo.org/cogitations/2007/11/15/python-wishlist/#comment-754 Armin Ronacher Fri, 16 Nov 2007 09:11:10 +0000 http://lucumr.pocoo.org/cogitations/2007/11/15/python-wishlist/#comment-754 I think you mixed up the numbers. Coroutines is something I normally don't miss. But when it comes to writing, say, a mod_python compatibility interface for WSGI you would need coroutines, otherwise there is no way to make a request.write("...") emit a yield "...". I know that the assignments as expressions thing is something I will never get but I can tell you that I know countless people that think Python is lacking exactly that :-) The scoping problems I have are mostly fixed in Python 3 with the introduction of the nonlocal keyword. However because assignments are not expressions and afair nonlocal is no expression either we still can't do “something(lambda x: nonlocal foo = x)” and have to create a function in a function (which yes, is the same, but a lot more verbose). Yes, with backwards compatibility for the current with one would have to find a new syntax for that. Regards, Armin I think you mixed up the numbers. Coroutines is something I normally don’t miss. But when it comes to writing, say, a mod_python compatibility interface for WSGI you would need coroutines, otherwise there is no way to make a request.write(”…”) emit a yield “…”.

I know that the assignments as expressions thing is something I will never get but I can tell you that I know countless people that think Python is lacking exactly that :-)

The scoping problems I have are mostly fixed in Python 3 with the introduction of the nonlocal keyword. However because assignments are not expressions and afair nonlocal is no expression either we still can’t do “something(lambda x: nonlocal foo = x)” and have to create a function in a function (which yes, is the same, but a lot more verbose).

Yes, with backwards compatibility for the current with one would have to find a new syntax for that.

Regards,
Armin

]]> By: Brett http://lucumr.pocoo.org/cogitations/2007/11/15/python-wishlist/#comment-752 Brett Fri, 16 Nov 2007 02:52:19 +0000 http://lucumr.pocoo.org/cogitations/2007/11/15/python-wishlist/#comment-752 You will get 1 and 2 in Python 3.0. Not sure what you are after in 3, but if you want the ability to set variables in an enclosing scope you have that in 2.6. You will never get 3, period. Too prone to errors by overlooking the assignment. Or a typo where you meant a comparison. Not sure what you are after for 4. 5 is not going to happen as that would require new syntax that we most likely would have found by now for lambda. You will get 1 and 2 in Python 3.0.

Not sure what you are after in 3, but if you want the ability to set variables in an enclosing scope you have that in 2.6.

You will never get 3, period. Too prone to errors by overlooking the assignment. Or a typo where you meant a comparison.

Not sure what you are after for 4.

5 is not going to happen as that would require new syntax that we most likely would have found by now for lambda.

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