title: What are formatted string literals in Python 3.6?
body: <p>One of the features of Python 3.6 are formatted strings.</p>
  
  <p><a href="https://stackoverflow.com/questions/35745050/string-with-f-prefix-in-python-3-6">This SO question</a>(String with 'f' prefix in python-3.6) is asking about the internals of formatted string literals, but I don't understand the exact use case of formatted string literals. In which situations should I use this feature? Isn't explicit better than implicit?</p>