After creating the proper configuration for the script in step 1, web scraping and sending an email with the results is done in step 2 by calling search_keywords.py.

Let's take a look at the search_keywords.py script. The code is structured into the following parts:

• The IMPORTS section makes available all the Python modules to be used later. It also defines EmailConfig namedtuple to help with handling the email parameters. 
• READ TEMPLATES retrieves the email templates and stores them for later use in the EMAIL_TEMPLATE and EMAIL_STYLING constants.
• The __main__ block starts the process by, getting the configuration parameters, parsing the config file, and then calling the main function.
• The main function combines the other functions. First, it retrieves the articles, and then it obtains the body and sends the email.
• get_articles walks through all the feeds, discards any article that is over a week old, retrieves each of them, and searches for a match on the keywords. All the matched articles are returned, including information about the link and a summary.
• compose_email_body uses the email templates to compile the email body. Notice that the template is in Markdown and it gets parsed into HTML, to give the same information in plain-text and in HTML.
• send_email gets the body information, as well as required info such as the username/password, and finally sends the email.