关于以下代码的描述，错误的选项是（) with open（'abc.txt', 'r+') as f: lines = f.readlines（) for item in lines: print（item)A．执行代码后，abc.txt文件未关闭，必须通过close()函数关闭B．程序功能是打印输出abc.txt文件内容C．lines是列表类型D．item是字符串类型
关于以下代码的描述，错误的选项是（) with open（'abc.txt', 'r+') as f: lines = f.readlines（) for item in lines: print（item)
A．执行代码后，abc.txt文件未关闭，必须通过close()函数关闭
B．程序功能是打印输出abc.txt文件内容
C．lines是列表类型
D．item是字符串类型
参考答案和解析
修改代码为:a = [1,2,3]print(id(a))a = "Runoob"print(id(a))执行时,输出2行的内容相同。
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