On Thu, Oct 05, 2017 at 05:40:32PM +0200, Jason H wrote: > >>> a = [1,2,3] > >>> [ x for x in a if x & 1] > [1, 3] > >>> [ x for x in a if x & 1 else 'even'] > File "<stdin>", line 1 > [ x for x in a if x & 1 else 'even'] > ^ > SyntaxError: invalid syntax
[(x if x & 1 else 'even') for x in a] The if clause in the list comprehension determines which items are included, and there is no "else" allowed. You don't want to skip any values: the list comp should have the same number of items as "a" (namely, 3) the comprehension if clause is inappropriate. Instead, you want the value in the comprehension to conditionally depend on x. By the way, this list is for suggesting improvements and new functionality to the language, not for asking for help. You should consider asking your questions on python-list or tutor mailing lists instead. -- 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/
