# Fuctions, we are not limited to the functions Python gives us...we can create our own. # def lets Python know that we are going to define a function # example: def say_hello(): # the () lets Python know we are going to take action on the data type print('hello') say_hello() # THe reason that functions are so powerful because of the principle of DRY "Do Not Repeat Yourself"...functions are really # useful when you have things that you want to do over and over. print(say_hello)