def grouper(n, iterable, fillvalue=None):
"grouper(3, 'abcdefg', 'x') --> abc def gxx"
args = [iter(iterable)] * n
kwds = dict(fillvalue=fillvalue)
return izip_longest(*args, **kwds)
[GvR]
If you reverse the two parts it will work:
izip_longest(fillvalue=fillvalue, *args)
Wow, I'm astonished that that works. How weird.
Am I the only one who didn't know you could
put keyword arguments before star-args?
It's especially odd given that keyword arguments
are prohibited from preceding positional arguments, so
you can't just take the star-args version and
substitute the unpacked values:
IDLE 2.6b2
from itertools import izip_longest
args = 'abcdef', 'AB'
list(izip_longest(fillvalue='x', *args))
[('a', 'A'), ('b', 'B'), ('c', 'x'), ('d', 'x'), ('e', 'x'), ('f', 'x')]
list(izip_longest(fillvalue='x', 'abcdef', 'AB'))
SyntaxError: non-keyword arg after keyword arg
Raymond
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