预习:
![](https://img.haomeiwen.com/i6947605/d5969b22e395b29f.png)
方法items()、方法keys()、方法values()、函数sorted()、集合set()、
知识点:
6.3 遍历字典
6.3.1 遍历所有的键--值对
![](https://img.haomeiwen.com/i6947605/32f226567e45afee.png)
![](https://img.haomeiwen.com/i6947605/0f6ff82d191c92a7.png)
![](https://img.haomeiwen.com/i6947605/af1b219f6569cf58.png)
![](https://img.haomeiwen.com/i6947605/768fd57344b3676b.png)
![](https://img.haomeiwen.com/i6947605/62c9e7f2b00af2ea.png)
![](https://img.haomeiwen.com/i6947605/64a12e325763abad.png)
6.3.2 遍历字典中的所有键
方法keys()
默认遍历所有键
![](https://img.haomeiwen.com/i6947605/f52e0f302b7f41c5.png)
![](https://img.haomeiwen.com/i6947605/147d4a2b4b0f7641.png)
![](https://img.haomeiwen.com/i6947605/7b90bc7646836669.png)
![](https://img.haomeiwen.com/i6947605/b06c03d631e595d8.png)
![](https://img.haomeiwen.com/i6947605/4c5af4b6fb4c9c3a.png)
![](https://img.haomeiwen.com/i6947605/79fbab9f5a437d84.png)
![](https://img.haomeiwen.com/i6947605/e540daf9eecb17ae.png)
![](https://img.haomeiwen.com/i6947605/a90ddacac9c9315b.png)
6.3.3 按字母顺序遍历字典中的所有键
函数sorted()按字母顺序排列
![](https://img.haomeiwen.com/i6947605/f949a9f9c8c19339.png)
![](https://img.haomeiwen.com/i6947605/7cec423a194ce889.png)
![](https://img.haomeiwen.com/i6947605/87872ed7a7bca679.png)
6.3.4 遍历字典中的所有值
方法values()
![](https://img.haomeiwen.com/i6947605/360c5622c242b007.png)
![](https://img.haomeiwen.com/i6947605/0af70dadd86f3612.png)
![](https://img.haomeiwen.com/i6947605/3f678ed45547cb7b.png)
集合:剔除重复项,类似于列表,每个元素(值)都必须是独一无二的;
集合set()
![](https://img.haomeiwen.com/i6947605/d89faa4c06f12453.png)
![](https://img.haomeiwen.com/i6947605/3d8626501c45ad81.png)
练习:
大大:
![](https://img.haomeiwen.com/i6947605/71195392bfaefdc6.png)
我的图:
![](https://img.haomeiwen.com/i6947605/51dd7bd639a19071.png)
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