#pyqt | Logs for 2020-06-13

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[08:15:16] <ali1234> QObject.setProperty('property', numpy.int64) doesn't work :(
[08:15:21] <ali1234> it just does nothing
[08:15:32] <ali1234> not even a warning
[08:15:44] <ali1234> that was extremely confusing
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[08:37:09] <altendky> ali1234: an_instance.setProperty I assume?
[08:37:18] <ali1234> yeah
[08:38:09] <altendky> ali1234: yeah, qt doesn't use exceptions. Not the nicest thing ever to mix
[08:39:15] <altendky> I do wonder what a really pythony qt wrapper would be like to work with. Like would it be worth differing the API that much
[08:41:54] <altendky> Though just switching boolean returns to exceptions wouldn't be super problematic I don't think.
[08:42:15] <ali1234> oh, i'm supposed to check the return value of setProperty?
[08:44:31] <ali1234> i mean, i'm more annoyed that it didn't just work
[08:44:43] <ali1234> i can use a int64 anywhere else in python and it gets converted automatically
[08:47:18] <altendky> You can make the same call with 'x' and it works?
[08:47:34] <altendky> Though I wouldn't expect assignment to convert things mostly
[08:47:59] <ali1234> what do you mean x?
[08:48:20] <ali1234> if x is an int, it works, if x is a numpy.int64 it doesn't work
[08:48:37] <altendky> The string 'x'
[08:48:51] <altendky> Or an int, sure
[08:49:14] <ali1234> well, if x is a string, that's an error
[08:49:18] <ali1234> it is an int property
[08:49:22] <altendky> Mm...
[08:49:40] <altendky> Now I get the conversion expectation
[08:49:45] <ali1234> so "works" to me would mean it raises an exception... and it probably doesn't do that
[08:50:25] <ali1234> it will probably spit a QML warning when it tries to use it to index the array
[08:50:56] <altendky> Maybe pyqt6 could raise exceptions instead of Boolean failure returns
[08:52:07] <ali1234> thing is, i didn't even realise that x was numpy.int64 until i checked the type of the item i was setting
[08:52:10] <altendky> though what i really want is cffiqt
[08:52:39] <altendky> at least the fix is easy, even if it seems it shouldn't be needed and if it is it should have failed loudly :|
[08:52:40] <ali1234> because it comes from the depths of the parser system, which ultimately takes data from an array
[08:53:11] <ali1234> i fixed it inside the parser so that it always converts the data it pulls out
[08:54:09] <ali1234> so now i have this :) https://imgur.com
[09:04:52] <Avaris> teletext still exists?
[09:05:13] <ali1234> yes, on video tapes :)
[09:12:19] <Avaris> video tapes still exist? :)
[09:13:00] <ali1234> yes, you can buy them on ebay buy the hundred with random tv shows recorded on them. people collect them to digitize
[09:13:48] <ali1234> it is getting to the point where some many people are doing it that the prices are starting to inflate, for what is essentially trash that people were trying to get rid of just a few years ago
[09:19:07] <Avaris> huh, interesting. so, you can extract teletext from a recording of tv programme?
[09:19:12] <ali1234> yes
[09:19:41] <ali1234> not perfectly, but very close
[09:21:53] <Avaris> neat
[09:25:40] <ali1234> https://zxnet.co.uk is a good overview
[09:30:41] <Avaris> looks like a ML problem
[09:30:48] <ali1234> that's the next step
[09:31:16] <ali1234> in order to train i need a large collection of correctly tagged and decoded VBI packets
[09:31:33] <ali1234> but currently have no way to create that due to lack of GUI tools
[09:38:27] * Avaris nods
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[23:50:56] [Tritium] is now known as PapaEmeritus