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-rw-r--r--Lib/multiprocessing/context.py2
-rw-r--r--Lib/multiprocessing/spawn.py2
2 files changed, 2 insertions, 2 deletions
diff --git a/Lib/multiprocessing/context.py b/Lib/multiprocessing/context.py
index 63849f9..115d4bf 100644
--- a/Lib/multiprocessing/context.py
+++ b/Lib/multiprocessing/context.py
@@ -195,7 +195,7 @@ class BaseContext(object):
def get_start_method(self, allow_none=False):
return self._name
- def set_start_method(self, method=None):
+ def set_start_method(self, method, force=False):
raise ValueError('cannot set start method of concrete context')
def _check_available(self):
diff --git a/Lib/multiprocessing/spawn.py b/Lib/multiprocessing/spawn.py
index 4d76951..392c1599 100644
--- a/Lib/multiprocessing/spawn.py
+++ b/Lib/multiprocessing/spawn.py
@@ -218,7 +218,7 @@ def prepare(data):
process.ORIGINAL_DIR = data['orig_dir']
if 'start_method' in data:
- set_start_method(data['start_method'])
+ set_start_method(data['start_method'], force=True)
if 'init_main_from_name' in data:
_fixup_main_from_name(data['init_main_from_name'])