Bubble-sort unsorted list

my_list = [5,9,5,8,1,3,4,8,2,0,3,6,1,7,9]
# Making a copy of a list
unclassified  = my_list[:]
# Create a function for the bubble sort algorithm.
# With a single parameter, which will be the data to be sorted.
def bubble_sort(unclassified):
#  Initialise a swapped variable to be True
    changed = True
# Start a loop that runs until swapped is no longer True
    while changed == True:
#  Change swapped to False
        changed = False
# Iterate over the unsorted list
        for item in range(len(unclassified) - 1):
# Compare adjacent items in the list.
            if unclassified[item] > unclassified[item+1]:
                unclassified[item], unclassified[item+1] = unclassified[item+1], unclassified[item] # Swapping list items around
# Change swapped back to True if a swap has been made
                changed = True
# Return the ordered list, if no swaps have been made after a full iteration.
    return unclassified
# Print the list
print(my_list)
bubble_sort(unclassified)
# Print the sorted list
print(unclassified)
print ("******************************************************************")