On 27 March 2011 14:05, Jan Kaliszewski <zuo@chopin.edu.pl> wrote:
I'd would like to be able to do:
assert any(dropwhile(negated(str.isalnum), takewhile(negated(str.isspace), my_names)))
...instead of:
assert any(dropwhile(lambda name: not name.isalnum(), takewhile(lambda name: not name.isspace(), my_names)))
Do you honestly find *either* of those readable? I can't even work out what they do well enough to try to come up with an alternative version using generator expressions... If I needed an assertion like that, I'd write a function with a name that explains what's going on, which does the whole of that dropwhile-takewhile routine (probably using multiple lines, with comments) and then use that as assert(any(whatever_this_is(my_names))). -1 on putting anything in the stdlib which encourages obfuscated code like that. (Note: If that style suits you, then writing your own functions in your codebase to support it is fine, I just don't see it as something the stdlib should be doing). Paul.