Indicates if an interval is empty, meaning it contains no points.
A boolean indicating if a scalar Interval is empty, or a boolean ndarray positionally indicating if an Interval in an IntervalArray or IntervalIndex is empty.
See also
Interval.length
Return the length of the Interval.
Examples
An Interval that contains points is not empty:
>>> pd.Interval(0, 1, closed='right').is_empty False
An Interval that does not contain any points is empty:
>>> pd.Interval(0, 0, closed='right').is_empty True >>> pd.Interval(0, 0, closed='left').is_empty True >>> pd.Interval(0, 0, closed='neither').is_empty True
An Interval that contains a single point is not empty:
>>> pd.Interval(0, 0, closed='both').is_empty False
An IntervalArray or IntervalIndex returns a boolean ndarray positionally indicating if an Interval is empty:
>>> ivs = [pd.Interval(0, 0, closed='neither'), ... pd.Interval(1, 2, closed='neither')] >>> pd.arrays.IntervalArray(ivs).is_empty array([ True, False])
Missing values are not considered empty:
>>> ivs = [pd.Interval(0, 0, closed='neither'), np.nan] >>> pd.IntervalIndex(ivs).is_empty array([ True, False])
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