code: def __str__(self):
      return "%s(%s) failed without generators" % (
          self.func,
          ", ".join(map(str, self.exc.exprs[: self.nargs])),
      )
  
imports: from sympy.utilities import public
label_desc: Use image node_id 2 for calling the ComputationFailed obj's underlying member method code with example usage: obj.__str__() and returns: unknown