Flatten is used in numpy: https://numpy.org/doc/stable/reference/generated/numpy.ndarray.flatten.html?highlight=flatten#numpy.ndarray.flatten
Where it is a method, and goes all the way to one dimension. A builtin flatten can’t be the same, but it would be nice if it weren’t too different. e.g. list(flatten(a_2d_array)) would do the same thing as list(a_2d_array.flatten()). For a builtin, perhaps it could take an optional integer “depth” parameter which would provide flexibility and be one way to control its behavior with strings. -CHB On Sat, Jun 19, 2021 at 8:36 AM Marc-Andre Lemburg <m...@egenix.com> wrote: > On 19.06.2021 17:17, Serhiy Storchaka wrote: > > 19.06.21 18:12, Marc-Andre Lemburg пише: > >>> But there could be endless debate about whether flatten( ("x", "y") ) > should > >>> return a list or a tuple... > >> > >> Have it return an iterator :-) > > > > flatten = itertools.chain.from_iterable > > Well, like I said: modulo the discussion around what "flatten" > should mean, e.g. you will probably want to have flatten() go > a certain number of levels deep and not necessarily flatten > strings. > > But yes, such a definition is certainly a good start. > > -- > Marc-Andre Lemburg > eGenix.com > > Professional Python Services directly from the Experts (#1, Jun 19 2021) > >>> Python Projects, Coaching and Support ... https://www.egenix.com/ > >>> Python Product Development ... https://consulting.egenix.com/ > ________________________________________________________________________ > > ::: We implement business ideas - efficiently in both time and costs ::: > > eGenix.com Software, Skills and Services GmbH Pastor-Loeh-Str.48 > D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg > Registered at Amtsgericht Duesseldorf: HRB 46611 > https://www.egenix.com/company/contact/ > https://www.malemburg.com/ > > _______________________________________________ > 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/5C2JB3QU7E4S5MMRI7NCRSZ52MFKZCC5/ > Code of Conduct: http://python.org/psf/codeofconduct/ > -- Christopher Barker, PhD (Chris) Python Language Consulting - Teaching - Scientific Software Development - Desktop GUI and Web Development - wxPython, numpy, scipy, Cython
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