How to use collections.deque In Python
The collections.deque (double-ended queue) class provides the efficient way to the append and prepend elements.
from collections import deque
my_deque = deque([2, 3, 4])
my_deque.appendleft(1)
print(list(my_deque))
Output:
[1, 2, 3, 4]
Advantages:
- The Efficient for the both appending and prepending operations.
- Suitable for the scenarios requiring frequent additions and removals from the both ends.
Disadvantages:
- Requires the importing the collections module.
- Not a native list type so may require conversion back to the list.
Prepend Elements to Lists in Python
Prepending elements to a list in Python can be a common task in various programming scenarios. Although Python’s list type does not have a built-in method for the prepending elements several techniques can accomplish this. This article explores different methods for prepending elements to the lists in Python discusses their advantages and disadvantages and provides the best practices for efficient list manipulation.