On Wed, Aug 22, 2018 at 04:58:17PM +0100, Jonathan Fine wrote: > I wrote: > > > Here is my simple proposal. Enhance Python to allow > > > > >>> hn = def a, b=2, c=3: a ** b / c > > I'd like to add a clarification. Here are two proposals. > > ONE. Wherever you could have used 'lambda', you now have a choice. > You can still use 'lambda', or you can use 'def' instead. The > semantics are unchanged. > > TWO. Wherever you could have used 'lambda', you must now use 'def' > instead. The semantics are unchanged. > > I'm proposing ONE, not TWO. All existing Python code will continue to > run exactly as before. No Python code will have to be changed. And no > new programming capabilities would be added. > > So why do it? In a nutshell, to remove an obstacle.
And add a new obstacle: "What's the difference between function expressions created with def and function expressions created with lambda?" "Nothing." "So why do I have to learn TWO sets of syntax for exactly the same thing?" "Because its easier than learning one!" > To make DEFerred expressions easier to understand. They're not "deferred expressions", they're functions. It is true that function bodies contain deferred expressions (or statements), but the whole is not the part. -- Steve _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/
