示例#1
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 def testLine1(self):
     self.assertEqual(solution("hello world"), -1)
示例#2
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 def testLine2(self):
     self.assertEqual(solution("{}"), -1)
示例#3
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 def testLine7(self):
     self.assertEqual(solution("{}{foo{}"), 2)
示例#4
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 def testLine6(self):
     self.assertEqual(solution("}"), 0)
示例#5
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 def testLine5(self):
     self.assertEqual(solution("{{{}"), 0)
示例#6
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 def testLine4(self):
     self.assertEqual(solution("{{}{}}"), -1)
示例#7
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 def testLine3(self):
     self.assertEqual(solution("{{{foo();}}}{}"), -1)