Identifiers in python

A python identifier is a name used to identify a variable, function, class, object etc. An identifier should start with a letter from A to Z or a to z or an underscore (_) followed by any letters or digits (0-9).

Rules for writing identifiers :

1) Identifiers can be a combination of letters in lower case (a to z) or upper case (A to Z) or digits (0-9) or an underscore (_).

2)An identifier cannot be start with a digit.

3)Keywords cannot be used as identifiers.

4) We cannot use special symbols like !, @, $, #, %.

5)An identifier can be of any length.


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