How to reverse a list

• while loop

new_items = []
index = len(items) -1
while index >= 0:
    new_items.append(items[index])
    index = index - 1

• for loop with join

new_items = []
for i in items:
	new_items = [i] + new_items

• not in-place ( recommended )

reversed_items = items[::-1]
print(reversed_items)

• in-place reverse ( not recommended )

items.reverse()
print(items)

Reference

• Caesar Cipher