code: def single_rectangle_gdf():
      """Create a single rectangle for clipping."""
      poly_inters = Polygon(
          [(0, 0), (0, 10), (10, 10), (10, 0), (0, 0)]
      )
      gdf = GeoDataFrame([1], geometry=[poly_inters], crs="EPSG:3857")
      gdf["attr2"] = "site-boundary"
      return gdf
  
imports: import numpy
  import shapely
  from shapely.geometry import Polygon, Point, LineString, LinearRing, GeometryCollection, MultiPoint, box
  import geopandas
  from geopandas import GeoDataFrame, GeoSeries, clip
  from geopandas.testing import assert_geodataframe_equal, assert_geoseries_equal
  import pytest
  from geopandas.tools.clip import _mask_is_list_like_rectangle
label_desc: Use image node_id 4 for calling a global function with example usage: single_rectangle_gdf() and returns: gdf