Building Robust Object-Oriented Python Applications and Libraries/

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Solution: Students Performance Tracking System

Solution: Students Performance Tracking System

Learn how to implement the coded solution of students’ performance tracking system using the Iterator design pattern.

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Calculate averages

Create a function named generate_average_grades() to calculate the average grade of each student.

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Python 3.10.4
# Create a list of dictionaries, each representing a student's performance
student_data = [
  {
    "name": "Alice",
    "age": 18,
    "subjects": {"Math", "English", "Science"},
    "grades": {"Math": 85, "English": 92, "Science": 78}
  },
  {
    "name": "Bob",
    "age": 17,
    "subjects": {"Math", "History", "Art"},
    "grades": {"Math": 68, "History": 85, "Art": 60}
  },
  {
    "name": "John",
    "age": 19,
    "subjects": {"Chemistry", "English", "Biology"},
    "grades": {"Chemistry": 90, "English": 78, "Biology": 91}
  },
  {
    "name": "Geene",
    "age": 18,
    "subjects": {"Chemistry", "Math", "Biology"},
    "grades": {"Chemistry": 70, "Math": 72, "Biology": 61}
  },
  {
    "name": "Fredrik",
    "age": 20,
    "subjects": {"Finance", "Chemistry", "Biology"},
    "grades": {"Finance": 76, "Chemistry": 82, "Biology": 89}
  },
  {
    "name": "Aliya",
    "age": 17,
    "subjects": {"History", "Physics", "English"},
    "grades": {"History": 77, "Physics": 62, "English": 79}
  },
  {
    "name": "Daniel",
    "age": 19,
    "subjects": {"Art", "Chemistry", "Biology"},
    "grades": {"Art": 60, "Chemistry": 81, "Biology": 82}
  },
  {
    "name": "Jay",
    "age": 18,
    "subjects": {"Physics", "Chemistry", "English"},
    "grades": {"Physics": 79, "Chemistry": 85, "English": 67}
  },
  
]
# Calculate averages
def calculate_average(grades):
  total_score = sum(grades.values())
  num_subjects = len(grades)
  return total_score / num_subjects
def generate_average_grades(student_data):
  for student in student_data:
    name = student["name"]
    grades = student["grades"]
    if grades:
      average_grade = calculate_average(grades)
      yield (name, average_grade)

Code explanation

  • Line 55–58: Calculated the average grade from a given dictionary of grades. It calculated the total score by summing ...