Given 2 callables checking when a condition arises and returning True: def starting_when(element): ...
def ending_when(element: ... Allow: a_list[starting_when:] To be equivalent to: from itertools import dropwhile list(dropwhile(lambda x: not starting_when(x), a_list)) And: a_list[:ending_when] To: from itertools import takewhile list(takewhile(lambda x: not ending_when(x), a_list)) _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/