Add basic programming/final task/grades.py

basic programming/final task/grades.py

@@ -0,0 +1,163 @@
+import csv
+
+def readStudentFile(file_path):
+    """Reads student data from a file and returns a dictionary."""
+    students = {}
+    try:
+        with open(file_path, 'r') as file:
+            reader = csv.reader(file)
+            for row in reader:
+                student_id = row[0]
+                first_name = row[1]
+                last_name = row[2]
+                courses = {row[i]: int(row[i + 1]) for i in range(3, len(row), 2)}
+                students[student_id] = {
+                    'first_name': first_name,
+                    'last_name': last_name,
+                    'courses': courses
+                }
+    except Exception as e:
+        print(f"Error reading student file: {e}")
+    return students
+
+def saveStudentFile(file_path, students):
+    """Saves student data to a file."""
+    try:
+        with open(file_path, 'w', newline='') as file:
+            writer = csv.writer(file)
+            for student_id, data in students.items():
+                row = [
+                    student_id,
+                    data['first_name'],
+                    data['last_name']
+                ]
+                for course, grade in data['courses'].items():
+                    row.extend([course, grade])
+                writer.writerow(row)
+    except Exception as e:
+        print(f"Error saving student file: {e}")
+
+def menu():
+    """Displays the menu and gets the user's choice."""
+    print("\nMenu:")
+    print("1. Add new student")
+    print("2. Update grade")
+    print("3. Load grade updates from file")
+    print("4. Generate student report")
+    print("5. Generate course report")
+    print("6. Exit")
+    
+    while True:
+        try:
+            choice = int(input("Enter your choice: "))
+            if 1 <= choice <= 6:
+                return choice
+            else:
+                print("Invalid choice. Please choose between 1 and 6.")
+        except ValueError:
+            print("Invalid input. Please enter a number between 1 and 6.")
+
+def add_new_student(students):
+    """Adds a new student to the data."""
+    student_id = input("Enter student ID: ")
+    if student_id in students:
+        print("Error: Student with this ID already exists.")
+        return
+
+    first_name = input("Enter first name: ")
+    last_name = input("Enter last name: ")
+    students[student_id] = {
+        'first_name': first_name,
+        'last_name': last_name,
+        'courses': {}
+    }
+    print("Student added successfully.")
+
+def updateGrade(students):
+    """Updates a grade for a student."""
+    student_id = input("Enter student ID: ")
+    if student_id not in students:
+        print("Error: Student not found.")
+        return
+
+    course = input("Enter course name: ").capitalize()
+    try:
+        grade = int(input("Enter grade (0-100): "))
+        if 0 <= grade <= 100:
+            students[student_id]['courses'][course] = grade
+            print("Grade updated successfully.")
+        else:
+            print("Error: Grade must be between 0 and 100.")
+    except ValueError:
+        print("Error: Invalid grade format.")
+
+def loadGrades(file_path, students):
+    """Loads grade updates from a file."""
+    try:
+        with open(file_path, 'r') as file:
+            reader = csv.reader(file)
+            for row in reader:
+                student_id, course, grade = row
+                if student_id in students:
+                    students[student_id]['courses'][course] = int(grade)
+                else:
+                    print(f"Warning: Student ID {student_id} not found.")
+        print("Grade updates loaded successfully.")
+    except Exception as e:
+        print(f"Error loading grades: {e}")
+
+def generateStudentReport(students):
+    """Generates a report for a specific student."""
+    student_id = input("Enter student ID: ")
+    if student_id not in students:
+        print("Error: Student not found.")
+        return
+
+    student = students[student_id]
+    print(f"\nReport for {student['first_name']} {student['last_name']}:")
+    total, count = 0, 0
+    for course, grade in student['courses'].items():
+        print(f"{course}: {grade}")
+        total += grade
+        count += 1
+    if count > 0:
+        print(f"Average grade: {total / count:.2f}")
+
+def generateCourseReport(students):
+    """Generates a report for a specific course."""
+    course = input("Enter course name: ").capitalize()
+    print(f"\nReport for course: {course}")
+    total, count = 0, 0
+    for student in students.values():
+        if course in student['courses']:
+            grade = student['courses'][course]
+            print(f"{student['first_name']} {student['last_name']}: {grade}")
+            total += grade
+            count += 1
+    if count > 0:
+        print(f"Average grade: {total / count:.2f}")
+    else:
+        print("No students found for this course.")
+
+def main():
+    students = readStudentFile('students.csv')
+    while True:
+        choice = menu()
+        if choice == 1:
+            add_new_student(students)
+        elif choice == 2:
+            updateGrade(students)
+        elif choice == 3:
+            file_path = input("Enter grade updates file path: ")
+            loadGrades(file_path, students)
+        elif choice == 4:
+            generateStudentReport(students)
+        elif choice == 5:
+            generateCourseReport(students)
+        elif choice == 6:
+            saveStudentFile('students.csv', students)
+            print("Data saved. Exiting program.")
+            break
+
+if __name__ == "__main__":
+    main()