fixing external libraries

Author: crazyeng

wolframclient/serializers/encoder.py

@@ -5,10 +5,8 @@
 from collections import defaultdict
 from functools import partial
 
-import pkg_resources
-
 from wolframclient.serializers.utils import safe_len
-from wolframclient.utils.api import multiprocessing
+from wolframclient.utils.api import pkg_resources, multithreading
 from wolframclient.utils.dispatch import Dispatch
 from wolframclient.utils.functional import composition, is_iterable, iterate, map
 from wolframclient.utils.importutils import safe_import_string
@@ -66,7 +64,7 @@ def _update_plugins(self):
     # global lock to avoid multiple dispatcher updating in multithreaded programs.
 
     def update_dispatch(self):
-        with multiprocessing.Lock():
+        with multithreading.Lock():
             self._update_dispatch()
             self._update_plugins()
 

wolframclient/utils/api.py

@@ -138,7 +138,8 @@
     PackedArray="wolframclient.utils.packedarray.PackedArray",
 )
 
-multiprocessing = API(Lock="wolframclient.utils.lock.Lock")
+multithreading = API(Lock="wolframclient.utils.lock.Lock")
+pkg_resources = API(iter_entry_points="pkg_resources.iter_entry_points")
 
 PIL = API(Image="PIL.Image.Image", fromarray="PIL.Image.fromarray", open="PIL.Image.open")