Question

Exercise 7: Program exercise for Basic List operations Write a complete Python program including minimal comments (ile name, your name, and problem description) that solves the following problem with the main function: Problem Specification: Write a program that reads a number of scores from the user and performs the following 1. Read scores from the user until the user enters nothing but Center > key 2. Store scores into a list for processing below 3. Find the average of the scores along with the number of scores read (format as shown). 4. Sort the scores in ascending order and 5. Reverses the scores so that the scores are highest to the lowest 5. Print score with the ranking starting with 1. . Make sure you have a main function and there should not be any global variable or statement other than the main function that is being called Sample RUN #1: enter a score: 95 enter a score: 65 enter a score: 77 enter a score: 67 enter a score: 88 enter a score: 98 enter a score: 84 enter a score: All scores stored: [95, 65, 77, 67, 88, 98, 84] There are 7 scores entered The average is 82.00 After sorting in ascending order: [65, 67, 77, 84, 88, 95, 98] rank: score SAMPLE RUN #2: enter a score: 89 enter a score 97 enter a score: 77 enter a score All scores stored: 89, 97, 771 There are 3 scores entered The average is 87.63 After sorting in ascendine order: [77, 89, 92] rank: score 1 : 97 2 : 89 SAMPLE RUN #3: center a score: 11 All scores stored: No scores entered

Answer 1

check out the solution and do comment for any queries.
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# file name : listop.py
# name :
# program description : demonstration of basic list operations

# function definition
def main():
# initialize the list
lst = []
  
# infinite loop
while(1):
# prompt for user input
print("enter a score : ")
# read user input
n = input()
# check for empty input
if n:
# if not empty then convert to 'int' and append to the list
lst.append(int(n))
else:
# if empty then break out of the loop
break
# print the scores entered
print("\nAll scores stored : ", lst)
# find the length of the list
length = len(lst)
# if list is empty then print some message
if length==0 :
print("No scores entered")
else:
# if list not empty then print accordingly
print("\nThere are", length, "scores entered")
# loop through list and find sum
s = 0
for element in lst:
s += element
# finds average
average = s/length
# print average with 2 digits after decimal point
print("\nThe average is : %.2f" %average)
# sort the list
slst = sorted(lst)
# print th sorted list
print("\nAfter sorting in ascending oder : ", slst)
# sort the list in reverse
rslst = sorted(lst, reverse = True)
  
# print the scores with ranking starting with 1
rank=1
print("\nrank\t\t:\t\tscore\n")
for element in rslst:
print(rank,"\t\t:\t\t" ,element)
rank += 1
  
# main function call
if __name__== "__main__":
main()

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code:

1# file name : Listop.py 2 # name : 3 # program description : demonstration of basic list operations 5# function definition 6 def main(): # initialize the list 1st = [] 10 11 12 13 14 15 16 17 18 # infinite Loop while(1) : # prompt for user input print("enter a score : ") # read user input n = input() # check for empty input if n: # if not empty then convert to 'int' and append to the list Ist.append(int(n)) else: # if empty then break out of the Loop break # print the scores entered print("\nAll scores stored : ", lst) # find the Length of the list length = len(1st) # if list is empty then print some message 19 20 21 22 23 25

if length==0 : print("No scores entered) else: # if list not empty then print accordingly print("\n There are", length, "scores entered") # Loop through list and find sum 5 = 0 for element in lst: S += element # finds average average = 5/length # print average with 2 digits after decimal point print("\n The average is : %.2f" %average) # sort the list slst = sorted(1st) # print th sorted List print("\nAfter sorting in ascending oder : ", sist) # sort the list in reverse rslst = sorted (1st, reverse = True) # print the scores with ranking starting with 1 rank=1 print("\nrank\t\t:\t\tscore\n") for element in rslst: print(rank,"\t\t:\t\t" , element) rank += 1 54 55 # main function call 56 if _name__== "_main__": 57 main()
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Output 1::

enter a score : enter a score : 97 enter a score : 77 enter a score : All scores stored : [89, 97, 77] There are 3 scores entered The average is : 87.67 After sorting in ascending oder : [77, 89, 97] rank score 97

Output 2 ::

enter a score : All scores stored : [] No scores entered