code: def test_pandas_ecef():
      pandas = pytest.importorskip("pandas")
  
      x, y, z = pm.geodetic2ecef(
          pandas.Series(lla0[0]),
          pandas.Series(lla0[1]),
          pandas.Series(lla0[2]),
      )
  
      lat, lon, alt = pm.ecef2geodetic(
          pandas.Series(x), pandas.Series(y), pandas.Series(z)
      )
      assert lat == approx(lla0[0])
      assert lon == approx(lla0[1])
      assert alt == approx(lla0[2])
  
file_path: pymap3d/src/pymap3d/tests/test_geodetic.py
imports: from math import isnan, nan, radians, sqrt
  import pymap3d
  import pytest
  from pytest import approx
label_desc: Use image node_id 7 for calling a global function with example usage: test_pandas_ecef() without return types