Python Learning DAY05

Dictionary
Use {} to represent
Keys must be hash-
Key-value pair data {Key:value}
Key must be unique.
Increase
Dic[key] = value
Dic.setdefault (Key,value) does not exist, operates on
Delete
Pop (key) can return the deleted value
Del Dic[key]
Popitem () Random deletion
Clear ()
Change
Dic[key] = value
Dic.update (dict) Upgrade dictionary
Check
Get (Key)
Dic[key]
You can use a for loop
SetDefault (Key)
Keys gets to the list of key deposit high imitations
Values gets the value to be stored in the list of high imitations
Items gets all the key-value pairs into a meta-ancestor
Nesting
Enter as key value into nested

Python Learning DAY05