The Complete Python Course - Identifiers

The video tutorial explains the concept of identifiers in programming, highlighting the importance of not using keywords as identifiers. It outlines the rules for creating valid identifiers, such as starting with a letter or underscore, and provides examples of valid and invalid identifiers. The tutorial emphasizes that identifiers cannot contain special characters or start with a digit.

Why can't keywords be used as identifiers?

• They contain special characters.

• They are too long.

• They are reserved for specific functions in the language.

• They start with a digit.

What is a key rule for creating a valid identifier?

• It must start with a digit.

• It can include special characters.

• It should start with a letter or underscore.

• It must be a keyword.

Which of the following is NOT a valid identifier in programming?

• validName

• 123start

• _variable

• name_123

Which of the following is a valid identifier?

• valid_123

• 9lives

• for

• #hashTag

What is an example of an invalid identifier?

• name_1

• 1stPlace

• first_place

• place1