Solve the JSON Excercise
Understand the Problem
The image presents a JSON exercise with two main parts. The first part involves a JSON object representing a shopping cart, and the task is to write a function to calculate the total price. The second part provides a JSON structure containing student data (names and grades) and poses questions about accessing, manipulating, and understanding this data.
Answer
Total cart price calculation and array access, student info, grades, and iteration explained.
The total price of items in the cart can be calculated by summing the prices of each item. There are two students in the array, Alice and Bob. Alice's grades are math: 85, science: 90, and history: 88. Bob's grades are math: 92, science: 87, and history: 95. Alice's grades can be accessed using students[0].grades. Bob's science grade can be accessed using students[1].grades.science. Yes, a new student can be added to the array. The average grade for each subject can be calculated by summing the grades for each subject and dividing by the number of students. Yes, additional information can be added to each student. You would iterate over all students using a loop.
Answer for screen readers
The total price of items in the cart can be calculated by summing the prices of each item. There are two students in the array, Alice and Bob. Alice's grades are math: 85, science: 90, and history: 88. Bob's grades are math: 92, science: 87, and history: 95. Alice's grades can be accessed using students[0].grades. Bob's science grade can be accessed using students[1].grades.science. Yes, a new student can be added to the array. The average grade for each subject can be calculated by summing the grades for each subject and dividing by the number of students. Yes, additional information can be added to each student. You would iterate over all students using a loop.
More Information
JSON is a lightweight format for storing and transporting data. It is often used when data is sent from a server to a web page.
Tips
Ensure that the keys in a JSON object are enclosed in double quotes.
Sources
- Python JSON Exercise with Solution - PYnative - pynative.com
- Working with JSON - Learn web development | MDN - developer.mozilla.org
- JSON Introduction - W3Schools - w3schools.com
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