code: def test_same_seven_char_start_predicate(self):
      assert fn.sameSevenCharStartPredicate("don4ld") == {"don4ld"}
      assert fn.sameSevenCharStartPredicate("donald 1992") == {
          "donald1"
      }
      assert fn.sameSevenCharStartPredicate("g00fy  ") == {"g00fy"}
      assert fn.sameSevenCharStartPredicate(" c1p   c10p ") == {
          "c1pc10p"
      }
  
imports: import unittest
  from dedupe import predicate_functions
  from dedupe.cpredicates import ngrams
label_desc: Use image node_id 20 for calling the TestPredicateFunctions obj's underlying member method code with example usage: obj.test_same_seven_char_start_predicate() without return types