What are the main differences between different types of HTTP requests?

The main HTTP methods (request types) differ by their purpose:

• GET — requests data from the server. Does not change the server's state, used for retrieving information.
• POST — sends data to the server to create or process a resource. Can change the server's state.
• PUT — replaces the current resource on the server with the one specified in the request.
• DELETE — deletes the specified resource on the server.
• PATCH — partially updates a resource, changing only specified fields.
• HEAD — requests only the response headers, without the body.

Example using the requests library in Python:

import requests

response = requests.get('https://api.example.com/data')  # Fetch data
response = requests.post('https://api.example.com/data', json={'key': 'value'})  # Send data

Each method has its semantic meaning and is used depending on the task.