Arithmetic Operators

first_name = "first"
last_name = "last"

• first_name + " " + last_name ==> "first last"

• first_name * 3  ==> "firstfirstfirst"
• first_name[0]  ==> 'f'

sa = "1234567890abcdef"

• sa[0:3]   ===>  "123"
• sa[:3]   ===> "123"
• sa[:-5]   ===> "1234567890a"
• sa[5:6]   =====> "6"
• sa[5:7]   =====> "67"