sys. stdin. ReadLine and readlines and input ()

1：sys.stdin.readline： Only from cmd Read a line of input , After reading, exit the input , Program continues

2：sys.stdin.readlines: It can be downloaded from cmd Read multiple lines of input , But how to terminate the exit is unclear , On the Internet ctrl+d perhaps ctrl+z Neither. , Add one more enter Not good either. （ I was in pycharm in , Connect to remote server linux System ）, It's strange anyway

3： You can read multiple lines in the following way , And press enter end （ Add strip Because the default end will have \n）：

4： How to convert an input number from a string to a number , Refer to the method in the figure below （ Reference from ：python Accept user input sys.stdin.readline() as well as input_qq61791a45522ab Technology blog _51CTO Blog ）：

Be careful , For yes list（map（int/float, str/list))

5:input(): Be similar to readline（） Only one line can be entered , But there won't be \n ending , So don't add strip（） function