avatar Bite 315. More logging practice

In this Bite you will hone your logging skills by completing sum_even_numbers following the instructions in its docstring.

Not only will you code the function you will also deal with bad data:

- If you got an exception you will log and reraise it.

- If there is no exception, you will just log what the function did (example in docstring).

Here is how it should work:

# Scenario I. no exception
>>> from logger import sum_even_numbers
>>> sum_even_numbers([1, 2, 3, 4])
6
# this got logged:
>>> with open('/tmp/app.log') as f:
...     print(*f.readlines(), sep="\n")
...
2020-12-20 09:56:02,049 INFO sum_even_numbers Input: [1, 2, 3, 4] -> output: 6

# Scenario II. exception
>>> from logger import sum_even_numbers

# reraise the exception
>>> sum_even_numbers([1, 2, 'a', 4])
...
TypeError: not all arguments converted during string formatting

# this got logged:
>>> with open('/tmp/app.log') as f:
...     print(*f.readlines(), sep="\n")
...
2020-12-20 09:57:38,706 ERROR sum_even_numbers Bad inputs: [1, 2, 'a', 4]

Traceback (most recent call last):
...
TypeError: not all arguments converted during string formatting

--

If needed check out Python's Logging HOWTO. Happy coding!

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We use Python 3.8