Python - 类型错误:字符串索引必须是整数 [英] Python - TypeError: string indices must be integers

问题描述

由于某种原因，这段脚本返回了错误:TypeError: 字符串索引必须是整数"；我看不出有什么问题.我是不是很愚蠢，忽略了一个明显的错误?我这辈子都看不到了！

For some reason this piece of script is returning the error: "TypeError: string indices must be integers"; and I cannot see what's wrong. Am I being stupid and overlooking an obvious mistake here? I can't see one for the life of me!

terms = {"ALU":"Arithmetic Logic Unit"}
term = input("Type in a term you wish to see: ")

if term in terms:
    definition = term[terms]
    sentence = term + " - " + definition
    print(sentence)
else:
    print("Term doesn't exist.")

推荐答案

这一行 definition = term[terms] 试图从字符串 term 中取出一个字符.你可能只是打错了，想要

This line definition = term[terms] is trying to get a character out of the string term. You probably just typoed, and want

definition = terms[term]
                 ^ here, reference the dict, not the string

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