This part is not correct. I can't speak for the other languages, but in Python the exception that is originally thrown is the one that creates the traceback. If the finally block also throws an exception, then the traceback includes that as additional information. The author includes an addendum, yet he is still wrong about which exception is first raised.
The traceback is actually shown based on the last-thrown exception (that thrown from the finally in this example), but includes the previous "chained exceptions" and prints them first. From CPython docs [1]:
> When raising a new exception while another exception is already being handled, the new exception’s __context__ attribute is automatically set to the handled exception. An exception may be handled when an except or finally clause, or a with statement, is used. [...] The default traceback display code shows these chained exceptions in addition to the traceback for the exception itself. [...] In either case, the exception itself is always shown after any chained exceptions so that the final line of the traceback always shows the last exception that was raised.
So, in practice, you will see both tracebacks. However, if you, say, just catch the exception with a generic "except Exception" or whatever and log it without "__context__", you will miss the firstly thrown exception.
