Python Basic introduction （ A full set of nanny level tutorials ）

Chapter two

Section 10 ： Supplementary knowledge points of the list

Other operations of the list ( Add )
Sort
The list will be saved in the order you store it
sort Sort the list in ascending order
reverse: Flip

lst = [1, 2, 3, " Gentiana ", " Wu Da Long "]  #  The list will be saved in the order you store it 
print(lst)

lst = [222, 444, 123, 43, 123,43243, 111]
lst.sort()  #  Sort the list in ascending order 
lst.sort(reverse=True)   # reverse:  Flip 
print(lst)

Nesting of lists

lst = ["abc", "def", [" Ha ha Da ", " Mom ", " Bitter ridge tile ", [" coke ", "scrapy", 123]], 'aed', "qpr"]
print(lst[2][3][1])
lst[2][3][1] = lst[2][3][1].upper()
print(lst)

Circular deletion of list
Prepare a temporary list , Be responsible for storing the content to be deleted , Record the contents to be deleted , Delete from the original list .

lst = [' Zhao Min ', ' Zhang Shaogang ', ' zhang wuji ', ' Wu zetian ', ' Ying Zheng ', ' d ']

temp = []  #  Prepare a temporary list ,  Be responsible for storing the content to be deleted 
for item in lst:
    if item.startswith(" Zhang "):
        temp.append(item)  #  Record the contents to be deleted 
        # lst.remove(item) #  Yes bug

for item in temp:
    lst.remove(item)  #  Delete from the original list 
print(lst)

summary ：
sort Sort the list in ascending order ,reverse Flip ,
Pay attention to , Prepare a temporary list , Be responsible for storing the content to be deleted , Record the contents to be deleted , Delete from the original list .