code: def testAddMixedTypes(self):
      p = Pool()
      p.add("foo", 54)
  
      self.assertRaises(KeyError, p.add, "foo", "crap")
  
imports: from essentia_test import *
label_desc: Use image node_id 23 for calling the TestPool obj's underlying member method code with example usage: obj.testAddMixedTypes() without return types