python-list

#List class brackets nested any type index value slice value 
v1= "dafd" 
# li = [v1,1,23,32,"dsaf",["saf",12,["ddd",23, "123"]],"sdf","ddfa"] 
# print(li) 
# #Index value delete modification 
# print(li[3]) 
# #Slice, the result of slice is also a list 
# print(li[3: -1]) 
# #for while loop 
# for i in range(len(li)): 
# print(i,li[i]) 
# #Modify 
# li[1]=1234 
# print(li) 
# 
# #Delete 
# del li[0] 
# print(li) 
# # del li[0:3] #Slice deletion 
# 
# #Support in operation 
# v = 12 in li 
# print(v) 

li = [v1,1,23, 32,"dsaf",["saf",12,["ddd",23,"123"]],"sdf","ddfa"] 
"""
#取值ddd
print(li[5][2][0])
s = "slakghjkaalkgj121324"
li2 = list(s)
print(li2) 
# String conversion list new_li=list(s) #List 

conversion string 

li3 = [12,232,453,234,"1224","akdf"] #The 
list contains strings and numbers that can only be spliced ​​with a for loop 
s= "" 
for i in li3: 
   s = s + str(i) 

print(s) 
# If the list has only strings you can use join 
li4 = ["sdf","2qwe","123"] 
st= "".join( li4) 
print(st) 

""" 
""" 
1 cmp(list1, list2) 
compares the elements of two lists 
2 len(list) the 
number of list elements 
3 max(list) 
returns the maximum value of the list elements 
4 min(list) 
returns List element min 
5 list(seq) 
Convert tuple to list 
Python contains the following methods: 
ordinal method 
1 list.append(obj) 
appends a new object at the end of the 
list 2 list.count(obj) 
counts the number of times an element appears in the list 
3 list.extend(seq)
Append multiple values ​​from another sequence at the end of the list at once (extend the original list with a new list) 
4 list.index(obj) 
finds the index position of the first occurrence of a value from the list 
5 list.insert (index, obj) 
inserts the object into the list 
6 list.pop(obj=list[-1]) 
removes an element in the list (the last element by default) and returns the value of the element 
7 list.remove(obj) 
moves except the first occurrence of a value in the list 
8 list.reverse() 
reverses the elements in the list 
9 list.sort([func]) 
sorts the original list 
10 list. 

""" 
# li = [v1,1 ,23,32,"dsaf",["saf",12,["ddd",23,"123"]],"sdf","ddfa"] 
#def append(self, p_object): # append list elements 
# li = li. append("adfga") 

# def clear(self): # clear the list 
# li2 = [232,"23re"] 
# li2. clear() 
# print(li2) 

# def copy(self):# Shallow copy 
# v = li.copy() 
# print(v)
# def count(self, value): # Count the number of elements in the list 
# vi = li.count(12) 
# print(vi) 

# def extend(self, iterable): # Iterable object, loop append to add list element 
# li = [11,22,33,11,44,56,"das"] 
# li.extend(["23r",998,"sb"]) 
# print(li) 
# li.extend("too Ok") 
# print(li) 



# def index(self, value, start=None, stop=None): # Get the current value index position according to the value (left first) 

# def insert(self, index, p_object): # Specify the index position to insert the value 
li = [11,22,33,11,44,56,"das"] 


# def pop(self, index=None): # Bubble to delete list elements, delete an element by default, get Deleted element value 
li = [11,22,33,11,44,56,"das"] 
v = li.pop() #delete the last one by default 
v2 = li.pop(3) #specify index 


# def remove( self, value): # delete the specified value from the list (left first) 
li.remove(33)
print(li)
# def reverse(self): # reverse the current list 
print(li.reverse()) 
# def sort(self, key=None, reverse=False): # sort 
print(li.sort()) 
#print(li. sort(reverse=True)) 

#cmp 
#key 

print(min(li)) 
print(max(li) ) #The 
list is sorted and elements can be modified