join() is a string method and while using it the separator string iterates over an arbitrary sequence, forming string representations of each of the elements, inserting itself between the elements.

join()是一個字符串方法，使用它時，分隔符字符串會在任意序列上迭代，從而形成每個元素的字符串表示形式，并在元素之間插入自己。

Concisely, it's because join and string.join() are both generic operations that work on any iterable and is a string method.

簡而言之，這是因為join和string.join()都是可在任何可迭代對象上使用的通用操作，并且是字符串方法。

Because it is a string method, the join() can work for the Unicode string as well as plain ASCII strings.

因為它是一個字符串方法，所以join()可以用于Unicode字符串以及普通ASCII字符串。

Example Usage of string.join(list)

示例string.join(list)的用法

-bash-4.2$ python3 Python 3.6.8 (default, Apr 25 2019, 21:02:35) [GCC 4.8.5 20150623 (Red Hat 4.8.5-36)] on linux Type "help", "copyright", "credits" or "license" for more information.>>> test_string = "test" >>> test_string.join("1234") '1test2test3test4' >>>

In the above example, the string "test" is joined with every character provided as a join argument.

在上面的示例中，字符串“ test”與作為連接參數提供的每個字符連接在一起。

-bash-4.2$ python3 Python 3.6.8 (default, Apr 25 2019, 21:02:35) [GCC 4.8.5 20150623 (Red Hat 4.8.5-36)] on linux Type "help", "copyright", "credits" or "license" for more information.>>> test_string = "test" >>> test_string.join("---") '-test-test-' >>>

翻譯自: https://www.includehelp.com/python/why-is-it-string-join-list-instead-of-list-join-string.aspx

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