<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def bbox_hflip(bbox, rows, cols):
 """Flip a bounding box horizontally around the y-axis."""

    x_min, y_min, x_max, y_max = bbox
    return [1 - x_max, y_min, 1 - x_min, y_max]