1、去掉“自动保存功能”
pycharm默认是自动保存的，习惯自己按 ctrl + s 的可以进行如下设置：
菜单File -> Settings... -> Appearance & Behavior -> System Settings
去掉以下2个选项的选中
Synchronize files on frame activation
Save files on frame deactivation
菜单File -> Settings... -> Editor -> General -> Editor Tabs
选中以下选项
Mark modified tabs with asterisk