48 lines
1.4 KiB
Python
48 lines
1.4 KiB
Python
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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# This file is called from a test in test_pandas.py.
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from threading import Thread
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import pandas as pd
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from pyarrow.pandas_compat import _pandas_api
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if __name__ == "__main__":
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wait = True
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num_threads = 10
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df = pd.DataFrame()
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results = []
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def rc():
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while wait:
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pass
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results.append(_pandas_api.is_data_frame(df))
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threads = [Thread(target=rc) for _ in range(num_threads)]
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for t in threads:
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t.start()
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wait = False
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for t in threads:
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t.join()
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assert len(results) == num_threads
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assert all(results), "`is_data_frame` returned False when given a DataFrame"
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