How to use context managers in Python PART 2

Key Takeaways

Context managers are extremely useful when you want to handle what's happening when you enter and when you exit and make sure that you're always performing typically some cleanup or exiting type operation so that the code is always safe. You don't have memory leaks or anything along those lines. Now something to note here is that if we were to have an exception, so we were to do something like 0 over zero which will give us a zero division error. What's going to happen is that exception is going to be passed to this exit dunder method in these three parameters. Okay, now exit will still be called which is the important thing before this exception actually gets raised and causes a crash in our program. And we'll be able to look at what that exception is by looking at the exception type, the exception value, and the exception trace back that we get passed as parameters.