input: Write a python function to filter a list of dictionaries to find articles with titles containing the word "Python".
  assert filter_python_articles([{'title': 'Learn Python'}, {'title': 'Python Tutorial'}, {'title': 'JavaScript Guide'}])==[{'title': 'Learn Python'}, {'title': 'Python Tutorial'}]
  assert filter_python_articles([{'title': 'Java Programming'}, {'title': 'Python for Beginners'}, {'title': 'Advanced Python'}])==[{'title': 'Python for Beginners'}, {'title': 'Advanced Python'}]
  assert filter_python_articles([{'title': 'Cooking Recipes'}, {'title': 'Travel Tips'}])==[]
output: def filter_python_articles(articles):
      return [article for article in articles if 'Python' in article['title']]