增加:copy(), formkeys(),setdefault(), di[键]=值
1.创建一个新的对象,不对字典自身做出改变
copy():
![](https://img.haomeiwen.com/i14347629/bb0c35240cf7034a.png)
formkeys():
![](https://img.haomeiwen.com/i14347629/78b7c85f6ee39513.png)
2.对字典自身做出改变:
setdefault():
![](https://img.haomeiwen.com/i14347629/3433fb99cf0b15a5.png)
di[键]=值
![](https://img.haomeiwen.com/i14347629/4f86c58d5955f4c2.png)
删除:pop(),popitem(),clear()
pop()
![](https://img.haomeiwen.com/i14347629/2f01edd35526954e.png)
popitem():
![](https://img.haomeiwen.com/i14347629/99d215ea3c1befcd.png)
clear():
![](https://img.haomeiwen.com/i14347629/c4081bd16316433d.png)
更新:
update():
![](https://img.haomeiwen.com/i14347629/e9306f67a6b1330d.png)
查询:字典名[键],get(),keys(),items(),values()
字典名[键]:
![](https://img.haomeiwen.com/i14347629/4867d2bd57cc2500.png)
get():
![](https://img.haomeiwen.com/i14347629/69ac3bc4e2760e9c.png)
keys():
![](https://img.haomeiwen.com/i14347629/80aa8087686dea66.png)
items(),values():
![](https://img.haomeiwen.com/i14347629/0d72e8d8bdc4e09a.png)
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