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How do you index odd numbers in Python?

Published in Python Programming 1 min read

You can index odd numbers in a Python list using the range() function with a step of 2. This will iterate over the indices, starting from 1 (the first odd index) and incrementing by 2 each time.

Here's a breakdown:

Using range()

  • Syntax: range(start, stop, step)

  • Example:

    my_list = [1, 2, 3, 4, 5, 6, 7, 8, 9]
odd_indices = range(1, len(my_list), 2)

for i in odd_indices:
    print(f"Element at index {i}: {my_list[i]}")

    Output:

    Element at index 1: 2
Element at index 3: 4
Element at index 5: 6
Element at index 7: 8

This code snippet first defines a list my_list containing the numbers 1 through 9. Then, odd_indices is set to a range object that starts from 1, goes up to the length of the list, and increments by 2. This effectively captures all the odd indices. Finally, a for loop iterates through odd_indices and prints the elements at each index.

Additional Tips

  • You can also use list slicing with a step of 2 to access only the elements at odd indices: my_list[1::2]

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