【补充】
Python GUI 中 ：ALT+P 可以重复上一条命令。
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使用python idle的人恐怕都无法忍受默认的白色背景，及其语法高亮主题。
大家更倾向于使用黑色背景。
下面介绍Obsidian, Desert, 和Tango三种主题配置
在 用户目录 的.idlerc 目录下新建名为 config-highlight.cfg 文件，并加入如下内容
[tango] definition-foreground = #fce94f error-foreground = #fa8072 string-background = #2e3436 keyword-foreground = #8cc4ff normal-foreground = #ffffff comment-background = #2e3436 hit-foreground = #ffffff break-foreground = #000000 builtin-background = #2e3436 stdout-foreground = #eeeeec cursor-foreground = #fce94f hit-background = #2e3436 comment-foreground = #73d216 hilite-background = #edd400 definition-background = #2e3436 stderr-background = #2e3436 break-background = #2e3436 console-foreground = #87ceeb normal-background = #2e3436 builtin-foreground = #ad7fa8 stdout-background = #2e3436 console-background = #2e3436 stderr-foreground = #ff3e40 keyword-background = #2e3436 string-foreground = #e9b96e hilite-foreground = #2e3436 error-background = #2e3436 [desert] definition-foreground = #98fb98 error-foreground = #ff0000 string-background = #333333 keyword-foreground = #cc6600 normal-foreground = #f0e68c comment-background = #333333 hit-foreground = #ffffff break-foreground = black builtin-background = #333333 stdout-foreground = #eeeeee cursor-foreground = #ffcc00 hit-background = #333333 comment-foreground = #87ceeb hilite-background = gray definition-background = #333333 stderr-background = #333333 break-background = #ffff55 console-foreground = #87ceeb normal-background = #333333 builtin-foreground = #519e51 stdout-background = #333333 console-background = #333333 stderr-foreground = #ff3e40 keyword-background = #333333 string-foreground = #ffa0a0 hilite-foreground = #000000 error-background = #000000 [Obsidian] definition-foreground = #678CB1 error-foreground = #FF0000 string-background = #293134 keyword-foreground = #93C763 normal-foreground = #E0E2E4 comment-background = #293134 hit-foreground = #E0E2E4 builtin-background = #293134 stdout-foreground = #678CB1 cursor-foreground = #E0E2E4 break-background = #293134 comment-foreground = #66747B hilite-background = #2F393C hilite-foreground = #E0E2E4 definition-background = #293134 stderr-background = #293134 hit-background = #000000 console-foreground = #E0E2E4 normal-background = #293134 builtin-foreground = #E0E2E4 stdout-background = #293134 console-background = #293134 stderr-foreground = #FB0000 keyword-background = #293134 string-foreground = #EC7600 break-foreground = #E0E2E4 error-background = #293134
重启IDLE，依次选 Options -> Configure IDLE -> Highlighting 如下图
