code: def test_preserve_attrs(df):
      # https://github.com/geopandas/geopandas/issues/1654
      df.attrs["name"] = "my_name"
      attrs = {"name": "my_name"}
      assert df.attrs == attrs
  
      # preserve attrs in indexing operations
      for subset in [
          df[:2],
          df[df["value1"] > 2],
          df[["value2", "geometry"]],
      ]:
          assert df.attrs == attrs
  
      # preserve attrs in methods
      df2 = df.reset_index()
      assert df2.attrs == attrs
  
      # https://github.com/geopandas/geopandas/issues/1875
      df3 = df2.explode(index_parts=True)
      assert df3.attrs == attrs
  
imports: import os
  from packaging.version import Version
  import warnings
  import numpy
  from numpy.testing import assert_array_equal
  import pandas
  import shapely
  from shapely.geometry import Point, GeometryCollection, LineString, LinearRing
  import geopandas
  from geopandas import GeoDataFrame, GeoSeries
  import geopandas._compat
  from geopandas.array import from_shapely
  from geopandas.testing import assert_geodataframe_equal, assert_geoseries_equal
  from pandas.testing import assert_frame_equal, assert_series_equal
  import pytest
label_desc: Use image node_id 46 for calling a global function with example usage: test_preserve_attrs(df) without return types