python - Exception handling a Key/Attribute Error does not properly configure Tkinter message widget

I am trying to handle a KeyError/AttributeError in my news feed program that parses the Yahoo! Finance RSS API and outputs key data in a Tkinter GUI.

I have excepted the error/s, but when I try to output an error message to the message widget, it does not configure. I know that it excepts the error however as I have coded a simple print message.

MY QUESTION IS: How do I fix the message widget configuration, so that the error message is output to it, as right now, nothing occurs.

Any advice or criticism to what I am doing wrong would be great.

Thank you for your time, here is my code:

def parse_company_feed(news_feed_message, rss_url):
    ''' This function parses the Yahoo! RSS API for data of the latest five articles, and writes it to the company news text file'''


    # Define the RSS feed to parse from, as the url passed in of the company the user chose
    feed = feedparser.parse(rss_url)

    try:
        # Define the file to write the news data to the company news text file
        with open('C:\\Users\\nicks_000\\PycharmProjects\\untitled\\SAT\\GUI\\Text Files\\companyNews.txt', mode='w') as outFile:

            # Create a list to store the news data parsed from the Yahoo! RSS
            news_data_write = []
            # Initialise a count

            count = 0
            news_data_write.append((feed['feed']['description'])+'\n')
            # For the number of articles to append to the file, append the article's title, link, and published date to the news_elements list
            for count in range(10):
                news_data_write.append(feed['entries'][count].title)
                news_data_write.append(feed['entries'][count].published)
                article_link = (feed['entries'][count].link)
                article_link = article_link.split('*')[1]
                news_data_write.append(article_link)
                # Add one to the count, so that the next article is parsed

                count+=1
                # For each item in the news_elements list, convert it to a string and write it to the company news text file
                for item in news_data_write:
                    item = str(item)
                    outFile.write(item+'\n')
                # For each article, write a new line to the company news text file, so that each article's data is on its own line
                outFile.write('\n')
                # Clear the news_elements list so that data is not written to the file more than once
                del(news_data_write[:])
    except KeyError and AttributeError:

        news_feed_message.configure(text = 'That company does not exist. Please enter another ticker.')
        print('nah m8, no feed')
    else:
        outFile.close()

    read_news_file(news_feed_message)