On Thu, Oct 27, 2016 at 8:48 AM, Mikhail V <mikhail...@gmail.com> wrote: > On 26 October 2016 at 20:58, Stephen J. Turnbull > <turnbull.stephen...@u.tsukuba.ac.jp> wrote: >>import collections >>def translate_or_drop(string, table): >> """ >> string: a string to process >> table: a dict as accepted by str.translate >> """ >> return string.translate(collections.defaultdict(lambda: None, **table)) > >>All OK now? > > Not really. I tried with a simple example > intab = "ae" > outtab = "XM" > table = string.maketrans(intab, outtab) > collections.defaultdict(lambda: None, **table) > > an this gives me > TypeError: type object argument after ** must be a mapping, not str > > But I probably I misunderstood the idea.
You're 99% of the way to understanding it. Try the exercise again in Python 3. You don't have string.maketrans (which creates a 256-byte translation mapping) - instead, you use a dictionary. ChrisA _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/
