CSE 1010 Lecture Notes - Lecture 19: First Statement

• School: UConn
• Department: Computer Science and Engineering
• Course: CSE 1010
• Professor: Jeff Meunier

Document Summary

A function should return a correct value or it should not return at all. This does not mean that a function should intentionally get stuck in an unbounded loop. There should be some other means of exiting a function, something that"s outside the normal path of execution. For a long program it is hard to do in the general way. An exception is a way to indicate that something unexpected happened. A function that raises an exception exists, but it does not return through the normal means. Formatting errors warning showed in red color. I want to try something that may fail. Below >>> try: are statements you want to try. We can see that there is an error in c = abc"[3], which is an exception. The orange except means: if an exception occurs i want to intercept it here. For the indexerror, this is the specific exception i want to intercept.