359     def map(self, func, iterable, chunksize=None):  argument
364         return self._map_async(func, iterable, mapstar, chunksize).get()
366     def starmap(self, func, iterable, chunksize=None):  argument
372         return self._map_async(func, iterable, starmapstar, chunksize).get()
374     def starmap_async(self, func, iterable, chunksize=None, callback=None,  argument
379         return self._map_async(func, iterable, starmapstar, chunksize,
393     def imap(self, func, iterable, chunksize=1):  argument
398         if chunksize == 1:
407             if chunksize < 1:
410                         chunksize))
411             task_batches = Pool._get_tasks(func, iterable, chunksize)
422     def imap_unordered(self, func, iterable, chunksize=1):  argument
427         if chunksize == 1:
436             if chunksize < 1:
438                     "Chunksize must be 1+, not {0!r}".format(chunksize))
439             task_batches = Pool._get_tasks(func, iterable, chunksize)
460     def map_async(self, func, iterable, chunksize=None, callback=None,  argument
465         return self._map_async(func, iterable, mapstar, chunksize, callback,
468     def _map_async(self, func, iterable, mapper, chunksize=None, callback=None,  argument
477         if chunksize is None:
478             chunksize, extra = divmod(len(iterable), len(self._pool) * 4)
480                 chunksize += 1
482             chunksize = 0
484         task_batches = Pool._get_tasks(func, iterable, chunksize)
485         result = MapResult(self, chunksize, len(iterable), callback,
793     def __init__(self, pool, chunksize, length, callback, error_callback):  argument
798         self._chunksize = chunksize
799         if chunksize <= 0:
804             self._number_left = length//chunksize + bool(length % chunksize)