creating a list

lst=[1,2,3,4,5];
print(lst);

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creating an empty list

lst=list();
print(lst);

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creating a nested list

lst=[1,2,[3,15],4,5];
print(lst);

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creating list from sequence

lst=list("hello");
print(lst);

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creating list from taking input from user

lst=list(input("enter elements of list"));
print(lst);

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access third element of list

lst=[1,2,3,4,5,7];
print(lst[3]);

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Strings are not mutable but lists are

change third element in a list with a new element

lst=[1,2,3,4,5,7];
print(lst);
lst[3]=10;
print(lst);

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traversing a list

lst=[1,2,3,4,5,7];
for a in lst:
    print(a);

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print elements of list with index

lst=[1,2,3,4,5,7];
l=len(lst);
for i in range(0,l):
    print("Element : ",lst[i]," index : ",i);

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compare two lists for equality

lst=[1,2,3];
lst1=[1,2,3];
print(lst==lst1);

Output : True

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join two lists

lst=[1,2,3];
lst1=[4,5,8];
print(lst+lst1);

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repeating a list

lst=[1,2,3];
print(lst*3);

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slice a list

lst=[1,2,3,4,5,7,89,90];
print(lst[3:6]);

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another example of slicing a list

lst=[1,2,3,4,5,7,89,90];
print(lst[:6]);

output : first six elements
1,2,3,4,5,7

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another example of slicing a list

lst=[1,2,3,4,5,7,89,90];
print(lst[:-6]);

Output : 1,2

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appending items to list
append adds single item to list

lst=[1,2,3,4,5,7,89,90];
lst.append(101);
print(lst);

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update elements in list

lst=[1,2,3,4,5,7,89,90];
print(lst);
lst[3]=45;
print(lst);

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delete item from list

lst=[1,2,3,4,5,7,89,90];
print(lst);
del lst[3];
print(lst);

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delete items from list based on index

lst=[1,2,3,4,5,7,89,90];
print(lst);
del lst[0:3];
print(lst);

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pop element from list
it will extract last element from list


lst=[1,2,3,4,5,7,89,90];
print(lst.pop());

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pop element from list based on index

lst=[1,2,3,4,5,7,89,90];
print(lst.pop(4));

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find index of item in list

lst=[1,2,3,4,5,7,89,90];
print(lst.index(4));

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append item to list

lst=[1,2,3,4,5,7,89,90];
print(lst);
lst.append(400);
print(lst);

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extend one list with another using extend function

lst=[1,2,3,4,5,7,89,90];
lst1=[34,45,67];
lst.extend(lst1);
print(lst);

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while append() function adds single item to list, extend() function can add multiple items to list
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insert elements in list using insert function

lst=[1,2,3,4,5,7,89,90];
print(lst);
lst.insert(3,55);
print(lst);

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insert element in the beginning of the list using insert fnction

lst=[1,2,3,4,5,7,89,90];
print(lst);
lst.insert(0,55);
print(lst);

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insert element at the last of the list using insert function

lst=[1,2,3,4,5,7,89,90];
print(lst);
lst.insert(len(lst),55);
print(lst);

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pop method to get last element from list

lst=[1,2,3,4,5,7,89,90];
print(lst.pop());
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pop third element from list using pop function

lst=[1,2,3,4,5,7,89,90];
print(lst.pop(2));

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remove an element from list

lst=[1,2,3,4,5,7,89,90];
print(lst);
lst.remove(2);
print(lst);

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removing an element from list which is not present in the list gives an error
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clear to clear all list

lst=[1,2,3,4,5,7,89,90];
print(lst);
lst.clear();
print(lst);

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count function to count occurences of an element in a list

lst=[1,2,3,4,5,7,89,90];
print(lst.count(3));

Ouput : 1

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reverse method to reverse a list

lst=[1,2,3,4,5,7,89,90];
print(lst);
lst.reverse();
print(lst);

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sort a list using sort function

lst=[1,2,3,4,5,7,890,90];
print(lst);
lst.sort();
print(lst);

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