code: def simplify(geometry, tolerance, preserve_topology=True, **kwargs):
      """Returns a simplified version of an input geometry using the
      Douglas-Peucker algorithm.
  
      Parameters
      ----------
      geometry : Geometry or array_like
      tolerance : float or array_like
          The maximum allowed geometry displacement. The higher this value, the
          smaller the number of vertices in the resulting geometry.
      preserve_topology : bool, default True
          By default (True), the operation will avoid creating invalid
          geometries (checking for collapses, ring-intersections, etc), but
          this is computationally more expensive.
      **kwargs
          See :ref:`NumPy ufunc docs <ufuncs.kwargs>` for other keyword arguments.
  
      Examples
      --------
      >>> from shapely import LineString, Polygon
      >>> line = LineString([(0, 0), (1, 10), (0, 20)])
      >>> simplify(line, tolerance=0.9)
      <LINESTRING (0 0, 1 10, 0 20)>
      >>> simplify(line, tolerance=1)
      <LINESTRING (0 0, 0 20)>
      >>> polygon_with_hole = Polygon(
      ...     [(0, 0), (0, 10), (10, 10), (10, 0), (0, 0)],
      ...     holes=[[(2, 2), (2, 4), (4, 4), (4, 2), (2, 2)]]
      ... )
      >>> simplify(polygon_with_hole, tolerance=4, preserve_topology=True)
      <POLYGON ((0 0, 0 10, 10 10, 10 0, 0 0), (4 2, 2 4, 4 4, 4 2))>
      >>> simplify(polygon_with_hole, tolerance=4, preserve_topology=False)
      <POLYGON ((0 0, 0 10, 10 10, 10 0, 0 0))>
      """
      if preserve_topology:
          return lib.simplify_preserve_topology(
              geometry, tolerance, **kwargs
          )
      else:
          return lib.simplify(geometry, tolerance, **kwargs)
  
imports: import numpy
  from shapely import lib
  from shapely._enum import ParamEnum
  from shapely.algorithms._oriented_envelope import _oriented_envelope_min_area
  from shapely.decorators import multithreading_enabled, requires_geos
label_desc: Use image node_id 21 for calling a global function with example usage: simplify(geometry, tolerance, preserve_topology) and returns: lib, lib