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Current File : //usr/local/python-3.11/lib/python3.11/site-packages/pandas/tests/arrays/floating/test_contains.py
import numpy as np

import pandas as pd


def test_contains_nan():
    # GH#52840
    arr = pd.array(range(5)) / 0

    assert np.isnan(arr._data[0])
    assert not arr.isna()[0]
    assert np.nan in arr

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