Hi, 2015-02-09 22:06 GMT+01:00 Neil Girdhar <mistersh...@gmail.com>: > The updated PEP 448 (https://www.python.org/dev/peps/pep-0448/) is > implemented now based on some early work by Thomas Wouters (in 2008) and > Florian Hahn (2013) and recently completed by Joshua Landau and me.
I don't like this PEP. IMO it makes the Python syntax more complex and more difficult to read. Extract of the PEP: > Current usage of the * iterable unpacking operator features unnecessary > restrictions that can harm readability. Yes, the current syntax is more verbose, but it's simpler to understand and simpler to debug. -- Example: >>> ranges = [range(i) for i in range(5)] >>> [*item for item in ranges] [0, 0, 1, 0, 1, 2, 0, 1, 2, 3] I don't understand this code. It looks like you forgot something before *item, I would expect 2*item for example. If it's really to unpack something, I still don't understand the syntax. Does "*" apply to item or to the whole "item for item in ranges"? It's not clear to me. If it applies to the whole generator, the syntax is really strange and I would expect parenthesis: [*(item for item in ranges)]. -- > function(**kw_arguments, **more_arguments) If the key "key1" is in both dictionaries, more_arguments wins, right? I never suffered of the lack of the PEP 448. But I remember that a friend learning Python asked me that * and ** are limited to functions. I had no answer. The answer is maybe to keep the language simple? :-) I should maybe read the PEP one more time and think about it. Victor _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
