How can I get the root of a URL in Python?

To get the root of a URL in Python, you can use the urllib.parse module. This module provides functionalities to parse URLs into their components, making it straightforward to extract the base or root.

Here's how you can do it:

1. Import the necessary module: Begin by importing the urlparse function from the urllib.parse module.

2. Parse the URL: Use the urlparse function to parse the URL string into a ParseResult object. This object contains various parts of the URL, such as scheme, netloc, path, etc.

3. Extract the root URL: The root of the URL typically consists of the scheme (e.g., "http", "https") and the network location (e.g., "www.example.com"). You can construct it by combining the scheme and netloc attributes from the ParseResult object.

4. Code Example:

from urllib.parse import urlparse

def get_root_url(url):
   parsed_url = urlparse(url)
   return f"{parsed_url.scheme}://{parsed_url.netloc}"

url_example = "https://www.example.com/path/to/resource?param1=value1¶m2=value2"
root_url = get_root_url(url_example)
print(root_url) # Output: https://www.example.com

url_example_2 = "http://sub.domain.co.uk/another/path"
root_url_2 = get_root_url(url_example_2)
print(root_url_2) # Output: http://sub.domain.co.uk

In the function get_root_url, the input URL string is parsed using urlparse. The root URL is then constructed using an f-string, including the scheme and net location, and returned. The provided example shows two different URLs being processed and the root URL extracted correctly.

By using this method, you can quickly get the base or root URL from a full URL, which can be useful for tasks like grouping URLs by their domain, or any other task requiring just the base URL information.

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