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# List Methods in Python | Set 2 (del, remove(), sort(), insert(), pop(), extend()…)

• Difficulty Level : Easy
• Last Updated : 18 Sep, 2018

Some of the list methods are mentioned in set 1 below

List Methods in Python | Set 1 (in, not in, len(), min(), max()…)

More methods are discussed in this article.

1. del[a : b] :- This method deletes all the elements in range starting from index ‘a’ till ‘b’ mentioned in arguments.

2. pop() :- This method deletes the element at the position mentioned in its arguments.

 # Python code to demonstrate the working of # del and pop()    # initializing list  lis = [2, 1, 3, 5, 4, 3, 8]    # using del to delete elements from pos. 2 to 5 # deletes 3,5,4 del lis[2 : 5]    # displaying list after deleting  print ("List elements after deleting are : ",end="") for i in range(0, len(lis)):     print(lis[i], end=" ")        print("\r")    # using pop() to delete element at pos 2 # deletes 3 lis.pop(2)    # displaying list after popping   print ("List elements after popping are : ", end="") for i in range(0, len(lis)):     print(lis[i], end=" ")

Output:

List elements after deleting are : 2 1 3 8
List elements after popping are : 2 1 8

3. insert(a, x) :- This function inserts an element at the position mentioned in its arguments. It takes 2 arguments, position and element to be added at respective position.

4. remove() :- This function is used to delete the first occurrence of number mentioned in its arguments.

 # Python code to demonstrate the working of # insert() and remove()    # initializing list  lis = [2, 1, 3, 5, 3, 8]    # using insert() to insert 4 at 3rd pos lis.insert(3, 4)    # displaying list after inserting print("List elements after inserting 4 are : ", end="") for i in range(0, len(lis)):     print(lis[i], end=" ")        print("\r")    # using remove() to remove first occurrence of 3 # removes 3 at pos 2 lis.remove(3)    # displaying list after removing  print ("List elements after removing are : ", end="") for i in range(0, len(lis)):     print(lis[i], end=" ")

Output:

List elements after inserting 4 are : 2 1 3 4 5 3 8
List elements after removing are : 2 1 4 5 3 8

5. sort() :- This function sorts the list in increasing order.

6. reverse() :- This function reverses the elements of list.

 # Python code to demonstrate the working of # sort() and reverse()    # initializing list  lis = [2, 1, 3, 5, 3, 8]    # using sort() to sort the list lis.sort()    # displaying list after sorting print ("List elements after sorting are : ", end="") for i in range(0, len(lis)):     print(lis[i], end=" ")        print("\r")    # using reverse() to reverse the list lis.reverse()    # displaying list after reversing print ("List elements after reversing are : ", end="") for i in range(0, len(lis)):     print(lis[i], end=" ")

Output:

List elements after sorting are : 1 2 3 3 5 8
List elements after reversing are : 8 5 3 3 2 1

7. extend(b) :- This function is used to extend the list with the elements present in another list. This function takes another list as its argument.

8. clear() :- This function is used to erase all the elements of list. After this operation, list becomes empty.

 # Python code to demonstrate the working of # extend() and clear()    # initializing list 1 lis1 = [2, 1, 3, 5]    # initializing list 1 lis2 = [6, 4, 3]    # using extend() to add elements of lis2 in lis1 lis1.extend(lis2)    # displaying list after sorting print ("List elements after extending are : ", end="") for i in range(0, len(lis1)):     print(lis1[i], end=" ")        print ("\r")    # using clear() to delete all lis1 contents lis1.clear()    # displaying list after clearing print ("List elements after clearing are : ", end="") for i in range(0, len(lis1)):     print(lis1[i], end=" ")

Output:

List elements after extending are : 2 1 3 5 6 4 3
List elements after clearing are :

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