数字与表达式——字符串

一、单引号字符串和转义字符 "Let's go!" Out[3]: "Let's go!" '"Hello world" she said' Out[4]: '"Hello world" she said' 转义字符 'Let\'s go' Out[8]: "Let's go" "\"Hello,world\" she said" Out[9]: '"Hello,world" she said'

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