How do I remove an element from a list by index? I found list.remove(), but this slowly scans the list for an item by value.

 

To remove an element from a list by its index in Python, you can use the pop() method. The pop() method removes and returns the item at the specified index. Here's an example:

python

# Create a list
my_list = [1, 2, 3, 4, 5]

# Remove an element by index
index_to_remove = 2  # Remove the element at index 2 (which is 3)
removed_element = my_list.pop(index_to_remove)

# Print the modified list and the removed element
print("Modified List:", my_list)
print("Removed Element:", removed_element)

In this example, my_list.pop(index_to_remove) removes the element at index 2 (which is the value 3) and returns it. The modified list will no longer contain the removed element.

Output:

mathematica

Modified List: [1, 2, 4, 5]
Removed Element: 3

Keep in mind that indexing in Python is zero-based, so the first element is at index 0, the second element is at index 1, and so on.