On Fri, Apr 3, 2009 at 4:18 PM, Terry Reedy <tjre...@udel.edu> wrote: > sloisel wrote: >> >> Dear All, >> >> I searched this group and found that there have been discussions about >> introducing a let expression to the language so that you can define >> local variables in a lambda. I.e., something like f=lambda x: let >> y=x^2 in sin(y). (My syntax is unpythonic, but I hope you get it). >> >> Can someone tell me what eventually happened? > > The discussions ended. > Proposals for assignment expressions have been rejected.
To elaborate slightly, if you need anything more complicated than a single expression, then *don't use a lambda*. Just use a named function. It's much clearer and easier. Proposals to extend lambda usually spiral/evolve into wanting to make lambda multi-line, which has repeatedly been found to be incompatible with Python's indentation-based syntax; and, again, you can just use a named function. Cheers, Chris -- I have a blog: http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list