78 lines
1.2 KiB
Markdown
78 lines
1.2 KiB
Markdown
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---
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title: String Join Method
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localeTitle: 字符串连接方法
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---
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## 字符串连接方法
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`str.join(iterable)`方法用于连接具有指定字符串`str`的`iterable`所有元素。 如果iterable包含任何非字符串值，则会引发TypeError异常。
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`iterable` ：字符串的所有迭代。可以是字符串列表，字符串元组甚至是普通字符串。
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#### 例子
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1）用`":"`加入字符串ist
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```python
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print ":".join(["freeCodeCamp", "is", "fun"])
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```
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产量
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```shell
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freeCodeCamp:is:fun
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```
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2）用`" and "`加入一个字符串元组
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```python
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print " and ".join(["A", "B", "C"])
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```
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产量
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```shell
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A and B and C
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```
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3）在字符串中的每个字符后面插入一个`" "`
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```python
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print " ".join("freeCodeCamp")
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```
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输出：
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```shell
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free C ode C amp
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```
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4）加入空字符串。
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```python
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list1 = ['p','r','o','g','r','a','m']
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print("".join(list1))
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```
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输出：
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```shell
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program
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```
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5）加入套装。
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```python
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test = {'2', '1', '3'}
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s = ', '
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print(s.join(test))
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```
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输出：
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```shell
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2, 3, 1
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```
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#### 更多信息：
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[字符串连接的Python文档](https://docs.python.org/2/library/stdtypes.html#str.join)
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