12.11.17 12:06, Nick Coghlan пише:
So if folks would like dict unpacking syntax, then a suitable place to
start would be a proposal for a "getitems" builtin that allowed
operations like:
b, a = getitems(d, ("b", "a"))
operator.itemgetter and operator.attrgetter may provide some
inspiration for possible proposals.
I don't see any relations between this getitems and operator.itemgetter
or operator.attrgetter. getitems can be implemented as:
(the most obvious way)
def getitems(mapping, keys):
for key in keys:
yield mapping[key]
or
def getitems(mapping, keys):
return map(functools.partial(operator.getitem, mapping), keys)
or (simpler but rough equivalent)
def getitems(mapping, keys):
return map(mapping.__getitem__, keys)
_______________________________________________
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
