Lemon class automatic learning after all

Multiline comment
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notes
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Divide and round
//

Check the memory address number of the data
id（）

Sort list in descending order
a.sort(reverse=True)
character string 、 list 、 Yuan Zu ： Collectively referred to as sequence types

String flip ：

List slice
Subscript one step 2

dict,set A disorderly No subscript index


Defining dictionaries does not require quotation marks


Only immutable types can be stored in the collection


There is only one element in a tuple , A tuple is a comma after it . If you do not add a comma, it will be recognized as the operator to execute first .

Operator



break： Force out of the loop .
Traverse the value of the element ：

Get key and value ：

print Don't wrap

In reverse order ：

List push down ：

multiplication table ：