All of the previous examples have dealt with textual or character data: You wrote and read character strings.
前面所有的示例都处理文本数据或字符数据：写入和读取字符string。
In this case, I join together a sequence of single-character strings contained in a tuple using the colon character.
在本例中，使用冒号将tuple包含的由单个字符构成的字符串序列连接在一起。
Parameters belonging to the eight basic types require only two character strings for their specification: one for name, and one for value representation.
属于这八种基本类型的参数对于其规范只需要两个字符串：一个用于名称，另一个用于值的表示。
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