36 lines
1.1 KiB
Markdown
36 lines
1.1 KiB
Markdown
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---
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title: The Python Strings
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localeTitle: Python字符串
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---
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Python允许`str`对象或_字符串_以几种不同的方式表达：
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* 单引号： `'Single quote strings can have "double" quotes inside.'`
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* 双引号： `"Double quote strings can have 'single' quotes inside."`
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* 三重引用：
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```
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"""Triple quoted strings can span multiple lines.
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Unescaped "double" and 'single' quotes in triple quoted strings are retained."""
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'''Triple quoted strings can be 'single'or "double" quotes.
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Unescaped newlines are also retained.'''
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```
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* 不可变：创建后不能直接编辑/更改Python字符串。例如，如果您尝试直接重新分配/更改字符串中的第一个字母，则会引发错误。
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```
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>>> foo = "my string"
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>>> foo[0] = "a"
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Traceback (most recent call last):
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File "<stdin>", line 1, in <module>
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TypeError: 'str' object does not support item assignment
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```
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## 参考：
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[文本序列类型_str_](https://docs.python.org/3/library/stdtypes.html#text-sequence-type-str)
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