multithreading module does not exist

replacing it by multiprocessing

Author: Dorian Birraux

wolframclient/utils/lock.py

@@ -3,18 +3,18 @@
 import warnings
 
 try:
-    import multithreading
+    import multiprocessing
 
-    _lock = multithreading.Lock()
+    _lock = multiprocessing.Lock()
 
     def Lock():
         return _lock
 
 
 except (ImportError, OSError):
 
-    # JYTHON is raising an ImportError when running "import multithreading"
-    # GVisor is raising an OSError when running "multithreading.Lock()" because the feature is not implemented
+    # JYTHON is raising an ImportError when running "import multiprocessing"
+    # GVisor is raising an OSError when running "multiprocessing.Lock()" because the feature is not implemented
 
     from contextlib import contextmanager