DataFrame.keys()
pandas.DataFrame.keys
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DataFrame.keys()
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Get the ‘info axis’ (see Indexing for more)
This is index for Series, columns for DataFrame and major_axis for Panel.
© 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.DataFrame.keys.html