Chapter 6.4, Problem 19CP

Program Plan Intro

Exception:

• • An exception is an error which occurs during a program execution.
• • The program execution stops abruptly when an exception occurs in the program.
• • To handle exceptions in the python programs, the “try/except” statements are used.

Exception handler:

The purpose of “exception handler” is to handle the errors occurring in the “try” suite.

“try” suite:

The “try” suite starts with the keyword “try”, and it is placed in the code which has the possibility to generate an exception.

• • The exception is caught in the “try” suite.
• • If an error is recognized in the “try” suite, the execution of the program is stopped immediately.
• • In python, “try” suite is represented with the keyword “try”, followed by colon.

“except” clause:

• • In python, “except” clause starts with the keyword “except”, followed by “Exception_Name”.
• • The exceptions raised in the “try” suite are handled in “except” clause.
• • In a program, “except” clause is used after the “try” suite.