def op_FORMAT_VALUE(self, inst, value, res, strvar):
        """
        FORMAT_VALUE(flags): flags argument specifies format spec which is not
        supported yet. Currently, str() is simply called on the value.
        https://docs.python.org/3/library/dis.html#opcode-FORMAT_VALUE
        """
        value = self.get(value)
        strgv = ir.Global("str", str, loc=self.loc)
        self.store(value=strgv, name=strvar)
        call = ir.Expr.call(self.get(strvar), (value,), (), loc=self.loc)
        self.store(value=call, name=res)

        FORMAT_VALUE(flags): flags argument specifies format spec which is not
        supported yet. Currently, str() is simply called on the value.
        https://docs.python.org/3/library/dis.html#opcode-FORMAT_VALUE
        
numba/core/interpreter.py