i. Fetching required part:
  Suppose you want to hear a specific song or music. You’ll speak to Alexa this way:
  Play music_name. Using this command, we will just remove the word ‘play’ and get only
  the ‘music_name’ part:

  And, then we will store that music name (without ‘Play’) in variable song.
ii) pywhatkit.playonyt():
  To use this module we have to install this module first and then import it. PyWhatKit
  has features to help us in automation. This module has a playonyt() method which we 
  will use to play the required songs directly on YouTube.
  First we’ll have to install it:

  And then import it.
iii. datetime.datetime.now():
  To use datetime Module first we have to install it and then import it. This module 
  helps us to manipulate dates and times. The method now() returns the current time, datetime 
  module is built-in Python module.
  Import it this way:

iv. wikipedia.summary():
  First we will need to install and import the Wikipedia module. This Python library makes it 
  easy to access data from Wikipedia. The summary() method gets the data from the summary 
  section of the Wikipedia.
  As we know it’s a third party module, then, we’ll have to install it first:

  And then import it in our code.
v. pyjokes.get_joke():
  First of all we have to install and import pyjokes module in order to use it in our program. This 
  module will generate some funny jokes randomly which our Alexa will crack.
  This is also a third-party module so first, we will have to install pyjokes.

  And then import it.

Finally, we make the call to the run_alexa() method.
Now we have created our own Alexa. Yay!
Using some Python skills and with the help of some other modules you can add more features to Alexa.