Check if the interval is closed on the left side.
For the meaning of closed and open see
True if the Interval is closed on the left-side.
Check if the interval is closed on the right side.
Boolean inverse of closed_left.
>>> iv = pd.Interval(0, 5, closed='left') >>> iv.closed_left True
>>> iv = pd.Interval(0, 5, closed='right') >>> iv.closed_left False