code: def test_ip(self):
      data = pandas.DataFrame(
          {
              "a": ["124.0.0.1", "124.0.0.2"],
              "b": ["124.0.0.1", "127.0.0.2"],
          }
      )
  
      transformer = lore.transformers.Distance(
          lat_a=lore.transformers.GeoIP("a", "latitude"),
          lat_b=lore.transformers.GeoIP("b", "latitude"),
          lon_a=lore.transformers.GeoIP("a", "longitude"),
          lon_b=lore.transformers.GeoIP("b", "longitude"),
      )
  
      transformed = transformer.transform(data)
      self.assertEqual(transformed.iloc[0], 0)
      self.assertTrue(math.isnan(transformed.iloc[1]))
  
imports: import unittest
  import datetime
  import math
  import numpy
  import pandas
  import lore.transformers
label_desc: Use image node_id 2 for calling the TestDistance obj's underlying member method code with example usage: obj.test_ip() without return types