On Fri, Oct 16, 2020 at 02:14:27AM +0100, Rob Cliffe via Python-ideas wrote:
> >You mean like.... a goto statement? I'm not sure what a "pseudo-loop" > >is, other than a way to use break as goto. > > > >ChrisA > > Is that bad? As I tried to explain, sometimes a process may need to be > abandoned at multiple points instead of running to completion (it may > succeed early or fail early). The usual way to handle that is by returning from a function, as you point out. > If the process were in a dedicated function, this would be done by > multiple return statements, and nobody would raise an eyebrow. There are a (very small?) number of people who would raise an eyebrow, as they insist on a strict view of "Single entry, single exit" and would argue against both break and early return from a function. http://wiki.c2.com/?SingleFunctionExitPoint I'm not one of them :-) > However, sometimes it is not convenient to hive the process off into its > own function (it might necessitate passing and receiving long > hard-to-maintain lists of what used to be local variables). Hmmm, well, I won't categorically say you *must* use a function, but I will say that using a function is probably the best solution. If you nest your function inside the major function, you don't even need to pass arguments: def function(a, b, c, d, e): # More local variables: f, g, h = 1, 2, 3 def inner(): # all locals a...h are visible in here return result thing = inner() so you may be able to move your processing to an inner function, without needing to explicit pass any arguments to it, and make use of return, rather than adding a loop so you can use break. -- Steve _______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/DB2MGO24CVMXVJBMLYXKYJ4LCBVSDM66/ Code of Conduct: http://python.org/psf/codeofconduct/
