quick sort algorithm in python

Below is an implementation of the quick sort algorithm in Python:

main.py
def quick_sort(arr):
    """
    This function sorts an array using the quick sort algorithm.
    """
    if len(arr) <= 1:
        return arr
    else:
        pivot = arr[0]
        left = []
        right = []
        for i in arr[1:]:
            if i < pivot:
                left.append(i)
            else:
                right.append(i)
        return quick_sort(left) + [pivot] + quick_sort(right)
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The code starts by checking if the array has only one element or less. If so, the array is already sorted, and it returns it as is.

If the array has more than one element, the first element is chosen as the pivot. Then, the code creates an empty list for the left side and right side of the pivot.

The loop goes through the array starting from the second element. It appends each element to either the left or right list, depending on whether it's less than or greater than the pivot.

Then, the function calls itself recursively on the left and right lists and concatenates the sorted left list, the pivot, and the sorted right list. The result is the sorted array.