we can see that the value stored in car has not been affected by the conditional test websites enforce certain rules for the data that users enter in manner similar to this for examplea site might use conditional test like this to ensure that every user has truly unique usernamenot just variation on the capitalization of another person' username when someone submits new usernamethat new username is converted to lowercase and compared to the lowercase versions of all existing usernames during this checka username like 'johnwill be rejected if any variation of 'johnis already in use checking for inequality when you want to determine whether two values are not equalyou can combine an exclamation point and an equal sign (!=the exclamation point represents notas it does in many programming languages let' use another if statement to examine how to use the inequality operator we'll store requested pizza topping in variable and then print message if the person did not order anchoviestoppings py requested_topping 'mushroomsu if requested_topping !'anchovies'print("hold the anchovies!"the line at compares the value of requested_topping to the value 'anchoviesif these two values do not matchpython returns true and executes the code following the if statement if the two values matchpython returns false and does not run the code following the if statement because the value of requested_topping is not 'anchovies'the print statement is executedhold the anchoviesmost of the conditional expressions you write will test for equalitybut sometimes you'll find it more efficient to test for inequality numerical comparisons testing numerical values is pretty straightforward for examplethe following code checks whether person is years oldage age = true