Variable Names

A certain variable name can be named as a and b or even given a more descriptive name like student_no, name, course etc.

• A variable name must start with a letter or the underscore character
• A variable name cannot start with a number
• A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ )
• Variable names are case-sensitive (age, Age and AGE are three different variables)

Valid names

myvar = "Joe"
my_var = "Joe"   #myvar and my_var are two different variables

Invalid names

5var = 102
var 1 = 445