Question

Which is a valid Identifier
1. My.School
2. MYSchool
3. My School
4. My-School​

Answer 1

2. MYSchool is a valid identifier.

Identifiers are names used to store values/used as variables/functions/a name given to identify a variable. They can consist of letters, followed by numbers and cannot have a special character other than an underscore (_).

• 1. My.School is invalid since it has a special character [fullstop].
• 3. My School is invalid since it has a special character [space].
• 4. My-School is invalid since it has a special character [hyphen].

Since MYSchool doesn't have special characters/does not start with a number, it is a valid identifier.

Keywords such as if, elif, class, def, dict, ... etc, cannot be classified as an identifier.