1) A friend recommended vscode, and finally installed PYcharm professional 2018.2.1 version
2) I watched 15 lectures of the Python teaching video on station B. . . https://www.bilibili.com/video/av17118368/?p=11
3) Logical IF, While, For, note: how to use
4) The assignment method of print+format print("HelloWolrd...{aaa}".format(aaa= _aaa))