Library import 16 (#2433)

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1 files changed, 53 insertions, 0 deletions

diff --git a/contrib/tools/python3/Lib/concurrent/futures/__init__.py b/contrib/tools/python3/Lib/concurrent/futures/__init__.py
new file mode 100644
index 0000000000..292e886d5a
--- /dev/null
+++ b/contrib/tools/python3/Lib/concurrent/futures/__init__.py
@@ -0,0 +1,53 @@
+# Copyright 2009 Brian Quinlan. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Execute computations asynchronously using threads or processes."""
+
+__author__ = 'Brian Quinlan (brian@sweetapp.com)'
+
+from concurrent.futures._base import (FIRST_COMPLETED,
+                                      FIRST_EXCEPTION,
+                                      ALL_COMPLETED,
+                                      CancelledError,
+                                      TimeoutError,
+                                      InvalidStateError,
+                                      BrokenExecutor,
+                                      Future,
+                                      Executor,
+                                      wait,
+                                      as_completed)
+
+__all__ = (
+    'FIRST_COMPLETED',
+    'FIRST_EXCEPTION',
+    'ALL_COMPLETED',
+    'CancelledError',
+    'TimeoutError',
+    'BrokenExecutor',
+    'Future',
+    'Executor',
+    'wait',
+    'as_completed',
+    'ProcessPoolExecutor',
+    'ThreadPoolExecutor',
+)
+
+
+def __dir__():
+    return __all__ + ('__author__', '__doc__')
+
+
+def __getattr__(name):
+    global ProcessPoolExecutor, ThreadPoolExecutor
+
+    if name == 'ProcessPoolExecutor':
+        from .process import ProcessPoolExecutor as pe
+        ProcessPoolExecutor = pe
+        return pe
+
+    if name == 'ThreadPoolExecutor':
+        from .thread import ThreadPoolExecutor as te
+        ThreadPoolExecutor = te
+        return te
+
+    raise AttributeError(f"module {__name__!r} has no attribute {name!r}")