code: def test_sevenchar(self):
      s1 = predicates.StringPredicate(
          predicates.sameSevenCharStartPredicate, "foo"
      )
      assert s1({"foo": "fo,18v*1vaad80"}) == s1(
          {"foo": "fo18v1vaad80"}
      )
  
imports: import unittest
  from dedupe import predicates
label_desc: Use image node_id 1 for calling the TestPuncStrip obj's underlying member method code with example usage: obj.test_sevenchar() without return types