Python Program to Access Index of a List Using for Loop

In this example, you will learn to access the index of a list using a for loop.

To understand this example, you should have the knowledge of the following Python programming topics:

• Python for Loop
• Python List
• Python enumerate()

1. Example 1: Using enumerate

my_list = [21, 44, 35, 11]

for index, val in enumerate(my_list):
    print(index, val)

Output

0 21
1 44
2 35
3 11

Using enumerate(), we can print both the index and the values.

• Pass two loop variables index and val in the for loop. You can give any name to these variables.
• Print the required variables inside the for loop block.

The function of enumerate() is to add a counter (i.e. index) to the iterate and return it. If you want to learn more about enumerate(), please visit Python enumerate().

2. Example 2: Start the indexing with non zero value

my_list = [21, 44, 35, 11]

for index, val in enumerate(my_list, start=1):
    print(index, val)

Output

1 21
2 44
3 35
4 11

The value of the parameter start provides the starting index.

3. Example 3: Without using enumerate()

my_list = [21, 44, 35, 11]

for index in range(len(my_list)):
    value = my_list[index]
    print(index, value)

Output

0 21
1 44
2 35
3 11

You can access the index even without using enumerate().

• Using a for loop, iterate through the length of my_list. Loop variable index starts from 0 in this case.
• In each iteration, get the value of the list at the current index using the statement value = my_list[index].
• Print the value and index.