263     def map(self, func, iterable, chunksize=None):  argument
268         return self._map_async(func, iterable, mapstar, chunksize).get()
270     def starmap(self, func, iterable, chunksize=None):  argument
276         return self._map_async(func, iterable, starmapstar, chunksize).get()
278     def starmap_async(self, func, iterable, chunksize=None, callback=None,  argument
283         return self._map_async(func, iterable, starmapstar, chunksize,
297     def imap(self, func, iterable, chunksize=1):  argument
303         if chunksize == 1:
312             if chunksize < 1:
315                         chunksize))
316             task_batches = Pool._get_tasks(func, iterable, chunksize)
327     def imap_unordered(self, func, iterable, chunksize=1):  argument
333         if chunksize == 1:
342             if chunksize < 1:
344                     "Chunksize must be 1+, not {0!r}".format(chunksize))
345             task_batches = Pool._get_tasks(func, iterable, chunksize)
367     def map_async(self, func, iterable, chunksize=None, callback=None,  argument
372         return self._map_async(func, iterable, mapstar, chunksize, callback,
375     def _map_async(self, func, iterable, mapper, chunksize=None, callback=None,  argument
385         if chunksize is None:
386             chunksize, extra = divmod(len(iterable), len(self._pool) * 4)
388                 chunksize += 1
390             chunksize = 0
392         task_batches = Pool._get_tasks(func, iterable, chunksize)
393         result = MapResult(self._cache, chunksize, len(iterable), callback,
676     def __init__(self, cache, chunksize, length, callback, error_callback):  argument
681         self._chunksize = chunksize
682         if chunksize <= 0:
687             self._number_left = length//chunksize + bool(length % chunksize)