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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。
更多 “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” 相关考题
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单选题In IBM Maximo Asset Management V6.2， what does the Purchase Orders applications Distribute Costs action do？（）A
Distribute the line item cost among all lines.B
Distribute the line item cost among all direct issue lines.C
Distribute the line item cost among multiple GL accounts.D
Distribute the purchase order cost among multiple GL accounts.
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单选题What should be done to add lines from a Purchase Request （PR） to a Requests for Quotation （RFQ）？ （）A
Hyperlink to the PR tab and add each line.B
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单选题下列打开文件的表达式中，（）是错误的。A
ofstream ofile；ofile.open（abc.txt，ios：：binary）；B
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ifstream ifile（abc.txt）；D
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