Initial commit

venv/lib/python3.10/site-packages/pyarrow/tests/arrow_39313.py

@@ -0,0 +1,47 @@
+# 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.
+
+# This file is called from a test in test_pandas.py.
+
+from threading import Thread
+
+import pandas as pd
+from pyarrow.pandas_compat import _pandas_api
+
+if __name__ == "__main__":
+    wait = True
+    num_threads = 10
+    df = pd.DataFrame()
+    results = []
+
+    def rc():
+        while wait:
+            pass
+        results.append(_pandas_api.is_data_frame(df))
+
+    threads = [Thread(target=rc) for _ in range(num_threads)]
+
+    for t in threads:
+        t.start()
+
+    wait = False
+
+    for t in threads:
+        t.join()
+
+    assert len(results) == num_threads
+    assert all(results), "`is_data_frame` returned False when given a DataFrame"