String Methods

String methods are special functions for working with strings.

Common string methods include str.upper, str.title, and str.replace

my_cool_string = 'data science is super cool!'  
my_cool_string.title() # 'Data Science Is Super Cool!'  
my_cool_string.upper() # 'DATA SCIENCE IS SUPER COOL!'  
my_cool_string.replace('super cool', '💯' * 3) # 'data science is 💯💯💯!'