code: def is_complex_code(self, contract):
          
  
          is_complex = self._is_complex_code(contract)
  
          result = red('Yes') if is_complex else green('No')
  
          return "\tComplex code? {}\n".format(result)
docs: Check if the code is complex
              Heuristic, the code is complex if:
                  - One function has a cyclomatic complexity > 7
          Args:
              contract