Error Handling

Instructions

Implement various kinds of error handling and resource management.

An important point of programming is how to handle errors and close resources even if errors occur.

This exercise requires you to handle various errors. Because error handling is rather programming language specific you'll have to refer to the tests for your track to see what's exactly required.

For the filelike_objects_are_closed_on_exception function, the filelike_object will be an instance of a custom FileLike class defined in the test suite. This class implements the following methods:

• open and close, for explicit opening and closing.
• __enter__ and __exit__, for implicit opening and closing.
• do_something, which may or may not throw an Exception.