datatable.Frame.nunique()¶

datatable.Frame.

nunique

(

)

Count the number of unique values for each column in the frame.

Parameters¶

return

Frame

The frame will have one row and the same number/names of columns as in the current frame. All the columns will have int64 stype.

See Also¶

.nunique1() – similar to this method, but operates on a single-column frame only, and returns a scalar value instead of a Frame.

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