Alain2131 Posted August 12, 2020 Share Posted August 12, 2020 Hello ! I'm trying to learn a bit of PDG since it might be useful for some of my projects. But I'm having a few issues For one, I wasn't able to find how to remove a work item. What I'm trying to do is search for a string in a bunch of files, and based on that I'll do some other things. Right now I'm simply trying to get to find the string in the files, but first I need the relevant files. So I use the filepattern node for that, but there is a few files for which I don't want. I use a pattern for the extension (*.txt), but there is some files with a specific string (in this case "proxy") in the filename that I would like to ignore. I tried something like "thePath\*.txt ^*proxy*" to get all the txt files without the ones with "proxy" in the name. Didn't work, maybe the syntax is wrong, but moving on. So I have a bunch of files (aka work item) that I want to get rid of. I tried using the split node, but I don't know how to work with PDG attributes. It always either error out, or gives me this Quote Warning on child node /obj/topnet1/split1/splitattrib: Missing or empty attribute '@filename' when evaluating '/obj/topnet1/split1/splitexpression' with work item 'split1_splitattrib3' I tried "@filename="file.txt" | @pdg_filename="file.txt" | I tried without the quotes, I tried with backticks around the filename part, without any success. What's the correct syntax for this ? I tried reading this, but without much results. I would need an example to understand it. So using expressions didn't work. I then moved on trying it out with Python. There is the "work_item.dirty(True, True)" command, which works as I want, I see the work item being removed in the node UI, but then Houdini freezes, then crashes. So I'm seemingly out of options. There is multiple questions, which are as follows : 1 - Is there a syntax for the file pattern that allows to get all .txt files, without the ones with a specific pattern in the name ? (mockup - "*.txt ^*proxy*") 2 - How to use PDG attributes in a node, as part of an expression ? Kinda like something simple like "@Frame=2", but in this fashion '@filename="file.txt" ' 3 - Why does the work_item.dirty() python command crashes Houdini ? Am I doing something wrong ? Test file attached. The zip contains some random .txt files with names to test out what I want, along with the hip file. pdg_test.zip Quote Link to comment Share on other sites More sharing options...
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