How do I force the player in a text-based game to use an alphabet-only name?

我怎么力在一个基于文本的游戏玩家使用字母的名字？

youdao

It is a text based adventure game in Python with cyberpunk theme.

这个基于文本的派森冒险游戏带着科幻的主题。

youdao

It is a text based adventure game in Python with cyberpunk theme.

这个基于文本的派森冒险游戏带着科幻的主题。

youdao