bubble sort program code in python

The code for a bubble sort algorithm in Python is relatively simple. It begins by setting a flag to True to indicate that the elements, or array, is not yet sorted. This flag is then set to False if any elements are swapped during a single iteration of the algorithm. This allows for bubble sort to exit the loop when the array is sorted. 

The outer loop of the algorithm then continues to loop and compare each element of the array, one at a time. The inner loop then compares two adjacent elements and swaps them if the first is greater than the second. The inner loop then moves to the next element of the array by incrementing the loop counter and shifting the focus of comparison. The outer loop then continues until the flag set to True is no longer true, indicating that the array is now sorted.

Here is an example of bubble sort code implemented in Python:

def bubble_sort(list): 
 
# set flag to True to denote that while loop should run 
flag = True                     
    
# continue loop while flag is True
while flag:
    flag = False
    
# loop through elements of list 
for i in range(len(list) - 1): 
        
# compare elements of list 
    if list[i] > list[i+1]:
            
# swap elements 
        list[i], list[i+1] = list[i+1], list[i] 
        
# set flag to True to denote that another pass is required 
        flag = True 

# print sorted list 
print(list) 

This code implements the bubble sort algorithm to sort an array in numerical (or alphabetical) order. It begins by setting a flag to True, indicating that the list should be sorted. It then repeatedly compares adjacent elements of an array, and swaps them if they are out of order, until the list is sorted. Once sorted, the flag is then set to False. 

In conclusion, bubble sort is an effective and efficient sorting algorithm that can be easily implemented in Python. It works by repeatedly comparing and swapping adjacent elements of an array until the array is sorted. The code for this algorithm is relatively simple, making it one of the easiest sorting algorithms to code in Python.