pandas.isnull()
pandas.isnull
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pandas.isnull(obj)
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Detect missing values (NaN in numeric arrays, None/NaN in object arrays)
Parameters: arr : ndarray or object value
Object to check for null-ness
Returns: isnulled : array-like of bool or bool
Array or bool indicating whether an object is null or if an array is given which of the element is null.
See also
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pandas.notnull
- boolean inverse of pandas.isnull
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© 2011–2012 Lambda Foundry, Inc. and PyData Development Team
© 2008–2011 AQR Capital Management, LLC
© 2008–2014 the pandas development team
Licensed under the 3-clause BSD License.
http://pandas.pydata.org/pandas-docs/version/0.18.1/generated/pandas.isnull.html