python 多行字符串如何拼接变量

在 Python 中，将变量拼接到多行字符串中有多种方法，以下是常见的几种方式：

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1. ‌使用 f-string（Python 3.6+ 推荐）‌

用 f"" 或 F"" 前缀定义多行字符串，变量直接通过 {变量名} 嵌入。

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name = "Alice" age = 30 msg = f""" Hello {name}, Your age is {age}. """ print(msg)

‌输出：‌

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Hello Alice, Your age is 30.

‌注意‌：字符串中的缩进会被保留（例如换行后的行首空格），需根据实际需求调整格式。

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2. ‌使用 format() 方法‌

通过 {} 占位符，再调用 .format() 传入变量。

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name = "Bob" age = 25 msg = """ Hello {name}, Your age is {age}. """.format(name=name, age=age) print(msg)

‌输出：‌

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Hello Bob, Your age is 25.

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3. ‌旧式 % 格式化‌

使用 % 操作符配合类型占位符（如 %s、%d）。

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name = "Charlie" age = 28 msg = """ Hello %s, Your age is %d. """ % (name, age) print(msg)

‌输出：‌

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Hello Charlie, Your age is 28.

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4. ‌多行字符串拼接（灵活换行）‌

通过括号 () 或反斜杠 \ 拼接多行字符串，灵活插入变量。

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user = "Dave" score = 95 msg = ( f"User: {user}\n" f"Score: {score}/100" ) print(msg)

‌输出：‌

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User: Dave Score: 95/100