Question

In Python

In this programming assignment, you will do multiple programming exercises, and eventually develop a Python application that can calculate student course grades.

1. (6 points) Write a program called p2-1.py to: (1) create a list and add integer numbers from 1 to 100 to the list; (2) calculate the average value of all numbers in the list; and (3) print the result (screenshots).

2. (8 points) Write a program called p2-2.py to: (1) allow a user to define how many integer numbers to input; (2) allow the user to interactively input those numbers; (3) calculate the average value of all numbers in the list; and (4) test your program with 5 integers as the user input and print the result (screenshots).

3. (10 points) Write a program called p2-3.py to: (1) create a dictionary to store the following student records, in which a “Student Name” is the key and the corresponding “Test Grades” is the value; (2) calculate the average of test grades for each student and store the results to the second dictionary; and (3) find the student with the highest average score; and (4) print the result (screenshots).

Student Records Table:

Student Name	Test Grades
Alice	80, 90, 70, 100, 60
Bob	70, 75, 88, 77, 82
Cindy	60, 70, 90, 80, 80
Don	66, 76, 76, 69, 81
Ellen	85, 88, 78, 82, 68

4. (11 points) Write a program called p2-py to extend p2-3.py. You should first make a copy of p2-3.py and then rename it as p2-4.py. In this program, according to the grading policy, the average of the five test grades (from the second dictionary in p2-3.py) is used as the final course grade for each student. This program is to: (1) covert the numerical course grade of each student to a letter grade based on the following grading scale; (2) store the result to the third dictionary; and (3) print the result for each student (screenshots).

Grading Scale:

A 90% - 100%

B 80% - 89%

C 70% - 79%

D 60% - 69%

F 0% - 59%

Answer 1

program 1:

import random
list1=[random.randint(1,100) for i in range(100)]

print ('average of 100 random no in list: {}'.format(sum(list1)/len(list1)))

program 2:

n=int(input('how many integer numbers you to input: '))
list1=[]
i=1
while n:
   list1.append(int(input('enter element no {}: '.format(i))))
   n-=1
   i+=1
print('average of {} integers is: {}'.format(len(list1),sum(list1)/len(list1)))

program3:

dict_stu_marks={'Alice':[80,90,70,100,60],"bob":[70, 75, 88, 77, 82],"cindy":[60, 70, 90, 80, 80],"Don":[66, 76, 76, 69, 81],"Ellen":[85, 88, 78, 82, 68]}

dict_stu_avg={}

max_avg=sum(dict_stu_marks['Alice'])/len(dict_stu_marks['Alice'])
maxkey='Alice'

for i in dict_stu_marks.keys():
   AVG=sum(dict_stu_marks[i])/len(dict_stu_marks[i])
   dict_stu_avg[i]=AVG
   if AVG>max_avg:
       max_avg=AVG
       maxkey=i

print('{} is having max average in list. Average: {}'.format(maxkey,max_avg))

program 4:

dict_stu_marks={'Alice':[80,90,70,100,60],"bob":[70, 75, 88, 77, 82],"cindy":[60, 70, 90, 80, 80],"Don":[66, 76, 76, 69, 81],"Ellen":[85, 88, 78, 82, 68]}

dict_stu_avg={}

max_avg=sum(dict_stu_marks['Alice'])/len(dict_stu_marks['Alice'])
maxkey='Alice'

for i in dict_stu_marks.keys():
   AVG=sum(dict_stu_marks[i])/len(dict_stu_marks[i])
   dict_stu_avg[i]=AVG
  

courseresult={}

for i in dict_stu_avg.keys():
   if dict_stu_avg[i]<=100 and dict_stu_avg[i]>=90:
       courseresult[i]='A'
   elif dict_stu_avg[i]<=89 and dict_stu_avg[i]>=80:
       courseresult[i]='B'
   elif dict_stu_avg[i]<=79 and dict_stu_avg[i]>=70:
       courseresult[i]='C'
   elif dict_stu_avg[i]<=69 and dict_stu_avg[i]>=60:
       courseresult[i]='D'
   elif dict_stu_avg[i]<=59 and dict_stu_avg[i]>=0:
       courseresult[i]='F'
   else:
       print('Invalid value')
      
for i in courseresult.keys():
   print('{} has grade : {}'.format(i,courseresult[i]))