code: def test_pop_invalid_prop_key_error(self):
      with self.assertRaises(KeyError):
          self.layout.pop("bogus")
  
file_path: plotly.py/packages/python/plotly/plotly/tests/test_core/test_graph_objs/test_graph_objs.py
imports: from unittest import TestCase
  import plotly.graph_objs
label_desc: Use image node_id 6 for calling the TestPop obj's underlying member method code with example usage: obj.test_pop_invalid_prop_key_error() without return types