Access List Elements

Access list elements

List items are indexed. You can access list element by index. First element index will be 0. The second element index will be 1, and so on.

Syntax

list_name[index]

Program

num = [100, 200, 600, 400, 300, 250]
print(num[2])

See Output

Access list elements by negative index

The negative index allows you to access elements starting from the end of the list.

Program

num = [100, 200, 600, 400, 300, 250]
print(num[-1])
print(num[-2])
print(num[0])

See Output

Note: Remember that the first item has index 0.

Range of Indexes

You can use range of indexes to get list elements.
You can use the negative indexes to get list elements.

Syntax

list_name[start:end]

Program

num = [100, 200, 600, 400, 300, 250,1000,1100,900,800]
print(num[2:4])
print(num[-4:-2])

See Output

Leave the start index

You can leave the start index. In this case first element index will be use as the start.

Syntax

list_name[:end]

Program

num = [100, 200, 600, 400, 300, 250,1000,1100,900,800]
print(num[:4])
print(num[:-4])

See Output

Leave the end index

You can leave the end index. In this case last element index will be use as the end.

Program

num = [100, 200, 600, 400, 300, 250,1000,1100,900,800]
print(num[4:])
print(num[-4:])

See Output

How to check an element exists or not in list

Membership operator(in, not in) is used to check element exist or not in the list.

Program

num = [100, 200, 600, 400, 300, 250,1000,1100,900,800]
if 600 in num:
    print("Yes, Element found")

See Output

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