Python data type

One, Python data type

integer int

String

Lists List

1, the list can be modified

2. The list contains multiple strings

3. The list can be indexed, sliced, indexed starting from 0, 1 for right-to-left

add element functions to the list:

Append (value) adds an element to the list, and the added element is at the end of the list

Insert (subscript, value) adds a value at the specified position, and the original element moves back

list Delete element function

Pop () to delete the element at the specified position

Remove () deletes the specified value

Clear () empties the list value

del empty list

List modification Elements

Direct modification after locating elements

lists[0]= ' 123456 '

List query elements

Use subscript to take the value

Other Functions

1, get the element subscript: index ()

2. Count the number of occurrences of a value in the list, counted ()

3. Reverse the string in the list, reverse ()

4, List sort, sort () ascending order, sort (reverse=true) descending order

5. List 1+ List 2, merge 2 lists

6, List 1*10, List 1 show 10 times

No group

Dictionary

Python data type