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Pandas DataFrame: nunique() function

DataFrame - nunique() function

The nunique() function is used to count distinct observations over requested axis.

Return Series with number of distinct observations. Can ignore NaN values.

Syntax:

DataFrame.nunique(self, axis=0, dropna=True)

Parameters:

Name Description Type/Default Value Required / Optional
axis The axis to use. 0 or ‘index’ for row-wise, 1 or ‘columns’ for column-wise. {0 or ‘index’, 1 or ‘columns’}
Default Value: 0		 Required
dropna Don’t include NaN in the counts. bool
Default Value: True		 Required

Returns:Series

Example:


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