Merging PR_218 openai_rev package with new streamlit chat app

venv/lib/python3.9/site-packages/pyarrow/tests/test_util.py

@@ -0,0 +1,52 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+import gc
+import signal
+import sys
+import weakref
+
+import pytest
+
+from pyarrow import util
+from pyarrow.tests.util import disabled_gc
+
+
+def exhibit_signal_refcycle():
+    # Put an object in the frame locals and return a weakref to it.
+    # If `signal.getsignal` has a bug where it creates a reference cycle
+    # keeping alive the current execution frames, `obj` will not be
+    # destroyed immediately when this function returns.
+    obj = set()
+    signal.getsignal(signal.SIGINT)
+    return weakref.ref(obj)
+
+
+def test_signal_refcycle():
+    # Test possible workaround for https://bugs.python.org/issue42248
+    with disabled_gc():
+        wr = exhibit_signal_refcycle()
+        if wr() is None:
+            pytest.skip(
+                "Python version does not have the bug we're testing for")
+
+    gc.collect()
+    with disabled_gc():
+        wr = exhibit_signal_refcycle()
+        assert wr() is not None
+        util._break_traceback_cycle_from_frame(sys._getframe(0))
+        assert wr() is None