How would I go about detecting if all alphabetic characters in a string (of >= 2 characters) are upper case? Ultimately, I'm trying to filter out chapter title names, that are rows in my data-set. So if a chapter title is "ARYA", I want that detected, same as "THE QUEEN'S HAND".How would I go about detecting if all alphabeti
阅读背景：
检查所有字母字符是否为大写
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