Getting Started With APIs

Exercise 2: Fetching and Manipulating Data with JSONPlaceholder API 

Question: 

Create a Python script that performs the following tasks using the JSONPlaceholder API: 

1. Fetch a specific post using a GET request. 
2. Parse the JSON response and print specific details of the post. 
3. Modify the post data and update it using a PUT request. 
4. Delete the modified post using a DELETE request. Include detailed comments explaining each step, including handling API responses, parsing JSON, error handling, and mentioning the API endpoints. 

Sample Code:

import requests
import json 

# Base URL for JSONPlaceholder API
base_url = "https://jsonplaceholder.typicode.com" 

# Function to fetch a specific post using GET request
def fetch_post(post_id):
    # Construct the URL for fetching the specific post
    url = f"{base_url}/posts/{post_id}"
    # Make a GET request to fetch the post
    response = requests.get(url)
   

    # Check if the request was successful
    if response.status_code == 200:
        print("Successfully fetched the post.")
        # Parse and print the post data
        post = response.json()
        print("Post Data:", json.dumps(post, indent=4))
        return post
    else:
        print(f"Failed to fetch post. Status code: {response.status_code}")
        return None 

# Function to update a post using PUT request
def update_post(post_id, updated_data):
    # Construct the URL for updating the post
    url = f"{base_url}/posts/{post_id}"
    # Make a PUT request to update the post
    response = requests.put(url, json=updated_data)
    

    # Check if the request was successful
    if response.status_code == 200:
        print("Successfully updated the post.")
        # Parse and print the updated post data
        updated_post = response.json()
        print("Updated Post Data:", json.dumps(updated_post, indent=4))
    else:
        print(f"Failed to update post. Status code: {response.status_code}") 

# Function to delete a post using DELETE request
def delete_post(post_id):
    # Construct the URL for deleting the post
    url = f"{base_url}/posts/{post_id}"
    # Make a DELETE request to delete the post
    response = requests.delete(url)
    

    # Check if the request was successful
    if response.status_code == 200:
        print("Successfully deleted the post.")
    else:
        print(f"Failed to delete post. Status code: {response.status_code}") 

# Example usage
if __name__ == "__main__":
    # Fetch a specific post
    post_id = 1
    post = fetch_post(post_id)
    

    if post:
        # Modify the post data
        post["title"] = "Modified Post Title"
        post["body"] = "This is the modified body of the post." 

        # Update the post
        update_post(post_id, post)
       

        # Delete the modified post
        delete_post(post_id)