Issue #8200: logging: Handle errors when multiprocessing is not fully loaded when logging occurs.
diff --git a/Lib/logging/__init__.py b/Lib/logging/__init__.py
index b1810d6..088c1fc 100644
--- a/Lib/logging/__init__.py
+++ b/Lib/logging/__init__.py
@@ -287,10 +287,18 @@
self.threadName = None
if not logMultiprocessing:
self.processName = None
- elif 'multiprocessing' not in sys.modules:
- self.processName = 'MainProcess'
else:
- self.processName = sys.modules['multiprocessing'].current_process().name
+ self.processName = 'MainProcess'
+ mp = sys.modules.get('multiprocessing')
+ if mp is not None:
+ # Errors may occur if multiprocessing has not finished loading
+ # yet - e.g. if a custom import hook causes third-party code
+ # to run when multiprocessing calls import. See issue 8200
+ # for an example
+ try:
+ self.processName = mp.current_process().name
+ except StandardError:
+ pass
if logProcesses and hasattr(os, 'getpid'):
self.process = os.getpid()
else:
diff --git a/Misc/NEWS b/Misc/NEWS
index dd61f4f..12db4af 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -29,6 +29,9 @@
Library
-------
+- Issue #8200: logging: Handle errors when multiprocessing is not
+ fully loaded when logging occurs.
+
- Issue #3890: Fix recv() and recv_into() on non-blocking SSL sockets.
- Issue #8179: Fix macpath.realpath() on a non-existing path.