Difference between sort() and sorted() in python
Milind Soorya / September 22, 2021
2 min read
Python is a developer friendly language. It has many built in method which helps to speed up the development process.
The sorted() and sort() method help to sort a python list. There is a small difference in how each method perform sorting.
sorted() method sorts the given sequence either in ascending order or in descending order and always return the a sorted list. This method doesnot effect the original sequence.
input_list = [5, 2, 1, 4, 3] print("Sorted list:") print(sorted(input_list)) # Sorted list: [1, 2, 3, 4, 5]
sort() function is very similar to
sorted() but unlike sorted it returns nothing and makes changes to the original sequence. Moreover,
sort() is a method of list class and can only be used with lists.
# List of Integers numbers = [1, 3, 4, 2] # Sorting list of Integers numbers.sort() print(numbers) # [1, 2, 3, 4]
In my testing I was able to find that the sorting almost take the same amount of time. But, as
sorted() creates a new list, the copying does takes some time.
- If you don’t require an original list in the later part of your code, you can sort the original list. Use sort() list method.
- If you require an optional list later part of your code, you need to create a new sorted list. Use sorted() built-in function.