#take user input here, create object and invoke the StudentGradeAnalyzer method by passing nested list

To create a Python program that takes user input for student grades, constructs a nested list, and then uses a method to analyze these grades, follow the steps below.

1. Break Down the Problem

We need to:

1. Take input from the user regarding the number of students and their respective grades.
2. Store these grades in a nested list.
3. Create a StudentGradeAnalyzer class with a method to analyze these grades.

2. Relevant Concepts

• Nested Lists: Useful for storing lists within lists, which can represent grades for multiple students.
• Classes and Methods: For encapsulating functionality related to grade analysis.

3. Analysis and Detail

Here’s a Python implementation of the above steps.

class StudentGradeAnalyzer:
    def __init__(self, grades):
        self.grades = grades

    def analyze(self):
        results = []
        for student_grades in self.grades:
            avg_grade = sum(student_grades) / len(student_grades)
            results.append(avg_grade)
        return results

# Step to take user input
num_students = int(input("Enter the number of students: "))
grades = []

# Loop to get grades for each student
for i in range(num_students):
    student_grades = input(f"Enter the grades for student {i+1} (comma-separated): ")
    # Convert input into a nested list of integers
    grades.append([int(grade) for grade in student_grades.split(',')])

# Create an object of StudentGradeAnalyzer
analyzer = StudentGradeAnalyzer(grades)

# Invoke the analyze method and print results
average_grades = analyzer.analyze()
print(f"Average grades for each student: {average_grades}")

4. Verify and Summarize

This code verifies correct input handling and average calculation across multiple grades. It collects user inputs efficiently and provides results in a straightforward manner.

Final Answer

The program will display the average grade for each student once they input their grades.