Expanding.count()
pandas.core.window.Expanding.count
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Expanding.count(**kwargs)
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- expanding count of number of non-NaN
- observations inside provided window.
Returns: same type as input
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© 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.core.window.Expanding.count.html