statementlist.py 文件源码

def buildexec(self):
        if isinstance(self.schema, Null):
            if sys.version_info[0] <= 2:
                return ast.Name("None", ast.Load())
            else:
                return ast.NameConstant(None)

        elif isinstance(self.schema, Boolean):
            if sys.version_info[0] <= 2:
                if self.value:
                    return ast.Name("True", ast.Load())
                else:
                    return ast.Name("False", ast.Load())
            else:
                if self.value:
                    return ast.NameConstant(True)
                else:
                    return ast.NameConstant(False)

        elif isinstance(self.schema, Number):
            return ast.Num(self.value)

        else:
            raise NotImplementedError   # have to think about this when the case comes up