diff options
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 92170f2..e450319 100644 --- a/Lib/multiprocessing/pool.py +++ b/Lib/multiprocessing/pool.py @@ -148,6 +148,8 @@ class Pool(object): processes = cpu_count() except NotImplementedError: processes = 1 + if processes < 1: + raise ValueError("Number of processes must be at least 1") if initializer is not None and not hasattr(initializer, '__call__'): raise TypeError('initializer must be a callable') |