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cur_group.append(s)
if cur_group or sep is not None:
yield cur_group
return"
4960,"def chunked(src, size, count=None, **kw):
""""""Returns a list of *count* chunks, each with *size* elements,
generated from iterable *src*. If *src* is not evenly divisible by
*size*, the final chunk will have fewer than *size* elements.
Provide the *fill* keyword argument to provide a pad value and
enable padding, otherwise no padding will take place.
>>> chunked(range(10), 3)
[[0, 1, 2], [3, 4, 5], [6, 7, 8], [9]]
>>> chunked(range(10), 3, fill=None)
[[0, 1, 2], [3, 4, 5], [6, 7, 8], [9, None, None]]
>>> chunked(range(10), 3, count=2)
[[0, 1, 2], [3, 4, 5]]
See :func:`chunked_iter` for more info.
""""""
chunk_iter = chunked_iter(src, size, **kw)
if count is None:
return list(chunk_iter)
else:
return list(itertools.islice(chunk_iter, count))"
4961,"def chunked_iter(src, size, **kw):
""""""Generates *size*-sized chunks from *src* iterable. Unless the
optional *fill* keyword argument is provided, iterables not even
divisible by *size* will have a final chunk that is smaller than
*size*.
>>> list(chunked_iter(range(10), 3))
[[0, 1, 2], [3, 4, 5], [6, 7, 8], [9]]
>>> list(chunked_iter(range(10), 3, fill=None))
[[0, 1, 2], [3, 4, 5], [6, 7, 8], [9, None, None]]
Note that ``fill=None`` in fact uses ``None`` as the fill value.
""""""
# TODO: add count kwarg?
if not is_iterable(src):
raise TypeError('expected an iterable')
size = int(size)
if size <= 0:
raise ValueError('expected a positive integer chunk size')
do_fill = True
try:
fill_val = kw.pop('fill')
except KeyError:
do_fill = False
fill_val = None
if kw:
raise ValueError('got unexpected keyword arguments: %r' % kw.keys())
if not src:
return
postprocess = lambda chk: chk
if isinstance(src, basestring):
postprocess = lambda chk, _sep=type(src)(): _sep.join(chk)
src_iter = iter(src)
while True:
cur_chunk = list(itertools.islice(src_iter, size))
if not cur_chunk:
break
lc = len(cur_chunk)
if lc < size and do_fill:
cur_chunk[lc:] = [fill_val] * (size - lc)
yield postprocess(cur_chunk)
return"
4962,"def windowed_iter(src, size):
""""""Returns tuples with length *size* which represent a sliding
window over iterable *src*.
>>> list(windowed_iter(range(7), 3))
[(0, 1, 2), (1, 2, 3), (2, 3, 4), (3, 4, 5), (4, 5, 6)]
If the iterable is too short to make a window of length *size*,
then no window tuples are returned.
>>> list(windowed_iter(range(3), 5))
[]
""""""
# TODO: lists? (for consistency)
tees = itertools.tee(src, size)
try:
for i, t in enumerate(tees):
for _ in xrange(i):
next(t)
except StopIteration:
return izip([])
return izip(*tees)"
4963,"def xfrange(stop, start=None, step=1.0):
""""""Same as :func:`frange`, but generator-based instead of returning a
list.
>>> tuple(xfrange(1, 3, step=0.75))
(1.0, 1.75, 2.5)
See :func:`frange` for more details.
""""""
if not step: