13 lines
		
	
	
		
			204 B
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			13 lines
		
	
	
		
			204 B
		
	
	
	
		
			Python
		
	
	
	
	
	
| import numpy as np
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| 
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| import pandas as pd
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| 
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| 
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| def test_contains_nan():
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|     # GH#52840
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|     arr = pd.array(range(5)) / 0
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| 
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|     assert np.isnan(arr._data[0])
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|     assert not arr.isna()[0]
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|     assert np.nan in arr
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