I want to iterate over a list in reverse order using Python.
What’s the most efficient or Pythonic way to handle a python reverse list scenario, especially when looping?
Are there any differences between using reversed() and slicing like my_list[::-1]
?
Would love a quick example!
The cleanest way I’ve seen for looping through a list in reverse is using Python’s built-in reversed()
function.
It doesn’t actually reverse the list in memory, it just returns an iterator that walks through it backwards.
So if you don’t need to modify the list and just want to loop:
for item in reversed(my_list):
print(item)
This is super readable, works on all sequences, and avoids creating a full reversed copy.