# Answer in Python for Yami #248845

``````#loop through displayList
for i in range(0,len(displayList)):
#Test if the fist item in the current sub-list contains the text "Price Level
#Tip: Remeber that each sub-list is a (displayList). So you have
#       to access its items via displayList followed by TWO indexes.
if
#Extract the second item from the current sub-list into variable called priceLevel

#Test if priceLevel is between previousPrice and currentPrice OR
#        priceLevel == previousPrice OR
#    priceLevel == currentPrice
if priceLevel >= previousPrice and priceLevel <= currentPrice or priceLevel == previousPrice or priceLevel == currentPrice:

#Sound the alarm. Pass in the frequency and duration.
if self.__currentPrice > self.__previousPrice:
frequency = 800
duration = 700
else:
frequency = 400
duration = 700
winsound.Beep(frequency, duration)

#Print the text 'Alarm' with a green background color, so that the user
#can go back and check when the alarm was sounded.``````
``````for i in displayList:
print(i[0])
for i in range(0,len(displayList)):
if i[0]=="Price Level":
priceLevel = i[1]
if priceLevel >= previousPrice and priceLevel <= currentPrice or priceLevel == previousPrice or priceLevel == currentPrice:
if self.__currentPrice > self.__previousPrice:
frequency = 800
duration = 700
else:
frequency = 400
duration = 700
winsound.Beep(frequency, duration)

print("Alarm")``````
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