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[Update process.py]: allow user to choose daemonic processes or not #13193

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[Update process.py]: allow user to choose daemonic processes or not #13193

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6 changes: 4 additions & 2 deletions Lib/concurrent/futures/process.py
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Original file line number Diff line number Diff line change
Expand Up @@ -489,7 +489,7 @@ class BrokenProcessPool(_base.BrokenExecutor):

class ProcessPoolExecutor(_base.Executor):
def __init__(self, max_workers=None, mp_context=None,
initializer=None, initargs=()):
initializer=None, initargs=(), daemon=True):
"""Initializes a new ProcessPoolExecutor instance.

Args:
Expand Down Expand Up @@ -520,6 +520,8 @@ def __init__(self, max_workers=None, mp_context=None,
self._initializer = initializer
self._initargs = initargs

self._daemon = daemon

# Management thread
self._queue_management_thread = None

Expand Down Expand Up @@ -578,7 +580,7 @@ def weakref_cb(_,
self._result_queue,
self._queue_management_thread_wakeup),
name="QueueManagerThread")
self._queue_management_thread.daemon = True
self._queue_management_thread.daemon = self._daemon
self._queue_management_thread.start()
_threads_wakeups[self._queue_management_thread] = \
self._queue_management_thread_wakeup
Expand Down