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Diffstat (limited to 'Lib/multiprocessing/pool.py')
| -rw-r--r-- | Lib/multiprocessing/pool.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Lib/multiprocessing/pool.py b/Lib/multiprocessing/pool.py index 5c1805f..d3ecc9b 100644 --- a/Lib/multiprocessing/pool.py +++ b/Lib/multiprocessing/pool.py @@ -208,6 +208,8 @@ class Pool(object): chunksize, extra = divmod(len(iterable), len(self._pool) * 4) if extra: chunksize += 1 + if len(iterable) == 0: + chunksize = 0 task_batches = Pool._get_tasks(func, iterable, chunksize) result = MapResult(self._cache, chunksize, len(iterable), callback) |