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Joined 2 years ago
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Cake day: June 18th, 2023

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  • I definitely have a hangup on students I teach saying something along the lines of “I don’t know how to get started on this, I asked GPT and…”. To be clear: We’re talking about higher-level university courses here, where GPT is, from my experience, unreliable at best and useless or misleading at worst. It makes me want to yell “What do you think?!?” I’ve been teaching at a University for some years, and there’s a huge shift in the past couple years regarding how willing students are to smack their head repeatedly against a problem until they figure it out. It seems like their first instinct when they don’t know something is to ask an LLM, and if that doesn’t work, to give up.

    I honestly want shake a physical book at them (and sometimes do), and try to help them understand that actually looking up what they need in a reliable resource is an option. (Note: I’m not in the US, you get second hand course books for like 40 USD here that are absolutely great, to the point that I have a bunch myself that I use to look stuff up in my research).

    Of course, the above doesn’t apply to all students, but there’s definitely been a major shift in the past couple years.


  • This is a kind of pedantic take… Yes, they’re professionals competing in combat sports, the sole purpose of which is to fight in a controlled environment, so that you can determine a winner with as few deaths and grievous injuries as possible.

    If we’re talking about MMA, then it’s literally a combat sport that was designed with the intent of settling the discussion of “which martial artist would win in a fight”, hence why pretty much all techniques are permitted (of course there are exceptions if you want to nitpick).

    You can’t look at a sport where people are intentionally knocked/choked unconscious or have bones broken by opponents and say “they’re not fighting because there’s points and they get paid”. Professional combat sports is the closest we’ll get to modern gladiators.




  • I really do agree on all your points, so at the end of the day I think a lot comes down to use-case and personal preference.

    My primary use cases for Python are prototyping and as a frontend/scripting tool for software written in C/C++/Fortran. In those scenarios, spending significant time on type hinting and unittests defeats the purpose of using Python (blazing fast development).

    I’ve written/worked on only one larger code base in pure Python, and my personal opinion became that I heavily prefer strictly typed languages once the code base exceeds a certain size. It just feels so much smoother to work with when I have actual guarantees that are enforced by the language.

    With that said, we were a bunch of people that are used to using Python for prototyping that developed this larger library, and it would probably have gone a lot better if we actually enforced use of proper type hinting from the start (which we were not used to).


  • Type hints are usually great, as long as they’re kept up to date and the IDE interprets them correctly. Recently I’ve had some problems with PyCharm acting up and insisting that matplotlib doesn’t accept numpy arrays, leading me to just disable the type checker altogether.

    All in all, I’m a bit divided on type hints, because I’m unsure whether I think the (huge) value added from correct type hints outweighs the frustration I’ve experienced from incorrect type hints. Per now I’m leaning towards “type hints are good, as long as you never blindly trust them and only treat them as a coarse indicator of what some dev thought at some point.”


  • Then I absolutely understand you :)

    How common it is 100 % depends on the code base and what practices are preferred. In Python code bases where I have a word in decisions, all Boolean checks should be x is True or x is False if x should be a Boolean. In that sense, if I read if x or if not x, it’s an indicator that x does not need to be a Boolean.

    In that sense, I could say that my preference is to flip it (in Python): Explicitly indicate/check for a Boolean if you expect/need a Boolean, otherwise use a “truethiness” check.




  • Exactly as you said yourself: Checking falsieness does not guarantee that the object has a length. There is considerable overlap between the two, and if it turns out that this check is a performance bottleneck (which I have a hard time imagining) it can be appropriate to check for falsieness instead of zero length. But in that case, don’t be surprised if you suddenly get an obscure bug because of some custom object not behaving the way you assumed it would.

    I guess my primary point is that we should be checking for what we actually care about, because that makes intent clear and reduces the chance for obscure bugs.



  • I write a lot of Python. I hate it when people use “X is more pythonic” as some kind of argument for what is a better solution to a problem. I also have a hang up with people acting like python has any form of type safety, instead of just embracing duck typing.This lands us at the following:

    The article states that “you can check a list for emptiness in two ways: if not mylist or if len(mylist) == 0”. Already here, a fundamental mistake has been made: You don’t know (and shouldn’t care) whether mylist is a list. These two checks are not different ways of doing the same thing, but two different checks altogether. The first checks whether the object is “falsey” and the second checks whether the object has a well defined length that is zero. These are two completely different checks, which often (but far from always) overlap. Embrace the duck type- type safe python is a myth.








  • At this point I have a hard time believing that anyone can buy a Chinese product and then talk about there being a “secret backdoor” in seriousness.

    Come on: We all should know by now that if it’s Chinese, there is more likely than not some way for Xi to use it for something other than what you want the product to do. There’s nothing “secret” or “back” about this door. It’s more like an open front gate with landing strips and a “welcome home Pooh bear” sign.