Question

Python: Printing Student Data

• Ask the user: "How many students are in the class?"
• Read in the number of students
• If there are students
  • For each student
    • Ask for the name of the student: "Enter the name of student:"
    • Read in the name of the student
    • If the student's name is greater than 24 characters
      • Do not display this student's data
      • Do not ask for their gpa
      • Print: "Name of student cannot exceed 24 characters."
    • Ask for the gpa of the student: "Enter the gpa of student:"
    • Read in the gpa of the student
    • If the student's gpa is not valid (between 0 and 4.0, inclusively)
      • Do not display this student's data
      • Do not include their gpa in the calculation
      • Print: "GPA of student must be between 0.0 and 4.0."
  • If the number of valid students is greater than zero
    • Display a chart of student data with headers and a header horizontal dividing line:
      • Number (left aligned in 10 spaces)
      • Name (left aligned in 24 spaces)
      • GPA (left aligned, spaces don't matter)
      • Horizontal divider (37 hyphens)
      • Student data vertically aligned with headers, one student per line
    • Display the average GPA of all of the valid students: "Average GPA: #.###" (there is no limit to the number of decimal places)

Assumptions

You may assume the following

• The number of students will be an integer
• The number of students will not exceed 10 characters
• The name of the student will be printable characters, you do not need to check them in any way
• The gpa of a student will be a floating point value
• Use the float type for floating point precision

Input(Exactly)

5
Stan Marsh
3.6
Kenny McCormick
2.3
Someone with a really long name more than 20 characters
Eric Cartman
-1.1
Kyle Broflovski
4.0

Output(Exactly)

How many students are in the class?
Enter the name of student:
Enter the gpa of student:
Enter the name of student:
Enter the gpa of student:
Enter the name of student:
Name of student cannot exceed 24 characters.
Enter the name of student:
Enter the gpa of student:
GPA of student must be between 0.0 and 4.0.
Enter the name of student:
Enter the gpa of student:
Number    Name                    GPA
-------------------------------------
1         Stan Marsh              3.6
2         Kenny McCormick         2.3
5         Kyle Broflovski         4.0
Average GPA: 3.3000000000000003

• The number of students will be an integer
• The number of students will not exceed 10 characters
• The name of the student will be printable characters, you do not need to check them in any way
• The gpa of a student will be a floating point value
• Use the float type for floating point precision

Requirements

To solve this problem, you must use the following python features:

• len() function
• for loop with range
• and/or
• continue

You may not use a string formatter

Answer 1

Python Code:

stuNum = int(input('How many students are in the class? ')) #getting number of students
stuList = [] #to store list of students who are valid
for i in range(0, stuNum): #looping to get student data
stuData = [] #to store current student data
stuName = input('Enter the name of student: ')
if len(stuName)> 24: #validating student name
print('Name of student cannot exceed 24 characters.')
continue
stuGpa = float(input('Enter the gpa of student: '))
if stuGpa < 0 or stuGpa > 4: #validating student GPA
print('GPA of student must be between 0.0 and 4.0.')
continue
stuData.append(stuName) #appending name to current student
stuData.append(stuGpa) #appending GPA to current student
stuList.append(stuData) #adding to main list

if len(stuList) > 0: #displaying output if there are valid students
print('Number' + ' ' * 3 + 'Name' + ' ' * 20 + 'GPA') #header
print('-' * 37) #37 hypens
sumGpa = 0 #to store GPA sum
for item in stuList: #displaying result of ech student
stuNumber = stuList.index(item) + 1
stuName = item[0]
stuGpa = item[1]
sumGpa += stuGpa #calculating sum
print(str(stuNumber) + ' ' * (10 - len(str(stuNumber)) - 1) + stuName + ' ' * (24 - len(stuName)) + str(stuGpa))
print('Average GPA: ' + str(sumGpa/(len(stuList)))) #displaying avg GPA

Sample Output: