How do I iterate over a list in reverse in Python? See also: How can I get a reversed copy of a list (avoid a separate statement when chaining a method after .reverse)?

You can iterate over a list in reverse in Python using either a loop or the built-in reversed() function. Additionally, you can create a reversed copy of a list using slicing or the reversed() function. Here's how you can do it:
Iterating over a list in reverse:

Using a loop:

python

my_list = [1, 2, 3, 4, 5]
for item in reversed(my_list):
    print(item)

Using reversed() function with a loop:

python

my_list = [1, 2, 3, 4, 5]
for item in my_list[::-1]:
    print(item)

Creating a reversed copy of a list:

Using slicing to create a reversed copy:

python

my_list = [1, 2, 3, 4, 5]
reversed_copy = my_list[::-1]
print(reversed_copy)

Using the reversed() function to create a reversed copy:

python

my_list = [1, 2, 3, 4, 5]
reversed_copy = list(reversed(my_list))
print(reversed_copy)

It's important to note that the reversed() function doesn't modify the original list but returns an iterator. If you want a reversed copy in list form, you need to convert the iterator to a list using list().

Both methods, looping and creating a reversed copy, have their own use cases. If you only need to iterate over the elements in reverse order without modifying the original list, use the loop approach or the reversed() function. If you need to work with the reversed list as a whole, creating a reversed copy using slicing or the reversed() function is more appropriate.