可以，您只需將代碼放入while循環中并提示用戶輸入：def main_menu():

print ("\n Main Menu ")

print ("1.Average Score of class = 'avg'")

# End main_menu()

one = "1.txt"

two = "2.txt"

three = "3.txt"

keepGoing = True

while(keepGoing):

main_menu()

option = input("option [avg]: ")

option_class = input("class: ")

if option.lower() == 'avg' and option_class == '1':

with open(one) as f:

the_list = [int(l.strip().split()[-1]) for l in f]

b = sum(the_list)

length = len(the_list)

avg = float(b) / length if length else 0

print ("Average of Class is: ", avg)

if option.lower() == 'avg' and option_class == '2':

with open(two) as f:

the_list = [int(l.strip().split()[-1]) for l in f]

b = sum(the_list)

length = len(the_list)

avg = float(b) / length if length else 0

print ("Average of Class is: ", avg)

if option.lower() == 'avg' and option_class == '3':

with open(three) as f:

the_list = [int(l.strip().split()[-1]) for l in f]

b = sum(the_list)

length = len(the_list)

avg = float(b) / length if length else 0

print ("Average of Class is: ", avg)

# Prompt user for input on whether they want to continue or not:

while(True):

keepGoingStr = input("Would you like to continue? (Y/N)\n>>> ").lower()

if(keepGoingStr[0] == 'y'):

# Keep going

keepGoing = True

break

elif(keepGoingStr[0] == 'n')

# Stop

keepGoing = False

break

else:

print("Sorry, your input did not make sense.\nPlease enter either Y or N for yes or no.")

# end if

# end while - keep going input

# End While(keepGoing)

不過，正如注釋中提到的，您應該考慮將代碼分解成函數。在

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