code: def test_same_three_char_start_predicate(self):
      assert fn.sameThreeCharStartPredicate("don4ld") == {"don"}
      assert fn.sameThreeCharStartPredicate("donald 1992") == {"don"}
      assert fn.sameThreeCharStartPredicate("g00fy  ") == {"g00"}
      assert fn.sameThreeCharStartPredicate(" c1p   c10p ") == {"c1p"}
  
imports: import unittest
  from dedupe import predicate_functions
  from dedupe.cpredicates import ngrams
label_desc: Use image node_id 18 for calling the TestPredicateFunctions obj's underlying member method code with example usage: obj.test_same_three_char_start_predicate() without return types