How to access the index in ‘for’ loops

• tinyytopic.com
• 0
• on Mar 23, 2023

In Python, you can access the index of an element in a sequence when iterating through it using a for loop by using the built-in function enumerate(). Here’s an example:

fruits = ['apple', 'banana', 'cherry']

for index, fruit in enumerate(fruits):
    print(index, fruit)

The output of the code execution is below:

0 apple
1 banana
2 cherry

In the above example, enumerate() is used to iterate over the fruits list and return a tuple containing the index and the value of each element. The for loop then unpacks the tuple into index and fruit variables and prints them out.

Note that the index starts from 0 by default, but you can specify a different starting value by passing a second argument to enumerate(). For example:

fruits = ['apple', 'banana', 'cherry']

for index, fruit in enumerate(fruits, start=1):
    print(index, fruit)

The output of the code execution is below:

1 apple
2 banana
3 cherry