Python 字符串拼接
字符串拼接
字符串拼接意味着将字符串连接在一起。
使用 + 字符将一个变量添加到另一个变量中。
对于数字，+ 字符充当数学运算符。
如果您尝试组合字符串和数字，Python 会报错。
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