HW Descending Order Final, Python 3

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#python 3.5.2

print ("Hello, world!")

#-------------Bubble Sort-------------------

def bubbleSort(alist):
    length = len(alist) 
    for passnumber in range(0, length):  # number of passes = N - 1
        print ('Passnumber: ', passnumber)
        for i in range((length-1) ,0,-1  ):     # loop for bubbles
            print ('Possible values for i:',i)
            if alist[i] > alist[i-1]:   
                temp       = alist[i]    # temp = 89
                alist[i]   = alist[i-1]  # 89 with 5
                alist[i-1] = temp        # 89 => 5
                print (i,'-->',alist)
            print ()
        print ('------------------------------------------------')
    return alist

#------------SelectionSort--------------------
def selectionSort(alist):
    length = len(alist) 
    for nLastPosition in range(length-1, 0, -1): 
        # nLastPosition -> 5 -> 4 -> 3 -> 2 -> 1
        # this loop goes from last position to first position
        # 1: identifying the maximum number [come back to this]
        minIndex = 0
        for numIndex in range(0, nLastPosition+1):
            if alist[numIndex] < alist[minIndex]:
                minIndex = numIndex
        
        print ("Min number: ", alist[minIndex])
        temp = alist[nLastPosition]
        alist[nLastPosition] = alist[minIndex]
        alist[minIndex] = temp
        print ("After swap: ", alist)
        print ()
    return alist

#---------InsertionSort------------------------
def InsertionSort(alist):
    length = len(alist)
    for position in range(1, length): # 1, 2, 3
        currentValue = alist[position] # = {17}
        while position > 0 and alist[position-1] < currentValue:
            alist[position] = alist[position-1]
            position = position - 1 # 3->2
        alist[position] = currentValue
        print ('Updating: ', alist)

return alist

#----------------------------------------------
sampleList = [1, 5, 89, 8, 23, 1]

sortedList = bubbleSort(sampleList)
print (sortedList)

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