Resampler.nunique()

pandas.tseries.resample.Resampler.nunique

Resampler.nunique(_method='nunique')

Returns number of unique elements in the group

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Licensed under the 3-clause BSD License.
http://pandas.pydata.org/pandas-docs/version/0.18.1/generated/pandas.tseries.resample.Resampler.nunique.html