shell.py 文件源码

def visit_UnaryOp(self, node):
        op = node.op
        self.generic_visit(node)
        if not isinstance(op, (ast.Invert, ast.UAdd)):
            return node
        op = '+' if isinstance(op, ast.UAdd) else '~'
        return self.make_Call('_shell_eval_lines',
                              [node.operand,
                               self.make_Call('locals'),
                               ast.Str(op),
                               self.make_Name(self.BASH_REPL_VAR)])