code: def test_uses_per_path():
      id = transforms.Affine2D()
      paths = [path.Path.unit_regular_polygon(i) for i in range(3, 7)]
      tforms_matrices = [
          id.rotate(i).get_matrix().copy() for i in range(1, 5)
      ]
      offsets = np.arange(20).reshape((10, 2))
      facecolors = ["red", "green"]
      edgecolors = ["red", "green"]
  
      def check(
          master_transform,
          paths,
          all_transforms,
          offsets,
          facecolors,
          edgecolors,
      ):
          rb = RendererBase()
          raw_paths = list(
              rb._iter_collection_raw_paths(
                  master_transform, paths, all_transforms
              )
          )
          gc = rb.new_gc()
          ids = [
              path_id
              for xo, yo, path_id, gc0, rgbFace in rb._iter_collection(
                  gc,
                  range(len(raw_paths)),
                  offsets,
                  transforms.AffineDeltaTransform(master_transform),
                  facecolors,
                  edgecolors,
                  [],
                  [],
                  [False],
                  [],
                  "screen",
              )
          ]
          uses = rb._iter_collection_uses_per_path(
              paths, all_transforms, offsets, facecolors, edgecolors
          )
          if raw_paths:
              seen = np.bincount(ids, minlength=len(raw_paths))
              assert set(seen).issubset([uses - 1, uses])
  
      check(id, paths, tforms_matrices, offsets, facecolors, edgecolors)
      check(
          id,
          paths[0:1],
          tforms_matrices,
          offsets,
          facecolors,
          edgecolors,
      )
      check(id, [], tforms_matrices, offsets, facecolors, edgecolors)
      check(
          id,
          paths,
          tforms_matrices[0:1],
          offsets,
          facecolors,
          edgecolors,
      )
      check(id, paths, [], offsets, facecolors, edgecolors)
      for n in range(0, offsets.shape[0]):
          check(
              id,
              paths,
              tforms_matrices,
              offsets[0:n, :],
              facecolors,
              edgecolors,
          )
      check(id, paths, tforms_matrices, offsets, [], edgecolors)
      check(id, paths, tforms_matrices, offsets, facecolors, [])
      check(id, paths, tforms_matrices, offsets, [], [])
      check(
          id,
          paths,
          tforms_matrices,
          offsets,
          facecolors[0:1],
          edgecolors,
      )
  
imports: import re
  from matplotlib import path, transforms
  from matplotlib.backend_bases import FigureCanvasBase, KeyEvent, LocationEvent, MouseButton, MouseEvent, NavigationToolbar2, RendererBase
  from matplotlib.backend_tools import RubberbandBase
  from matplotlib.figure import Figure
  from matplotlib.testing._markers import needs_pgf_xelatex
  import matplotlib.pyplot
  import numpy
  import pytest
label_desc: Use image node_id 1 for calling a global function with example usage: test_uses_per_path() without return types