Great stuff, thank you! Note that Zabbix supports also advanced JSONPath syntax in the latest releases with aggregation functions, etc. It might be extremely useful in some use cases. More on reddit.com

If you absolutely need to escape any non-ASCII chars using escape sequence, you can do it like this: fn escape(src: &str) -> String { use std::fmt::Write; let mut escaped = String::with_capacity(src.len()); let mut utf16_buf = [0u16; 2]; for c in src.chars() { match c { '\x08' => escaped += "\\b", '\x0c' => escaped += "\\f", '\n' => escaped += "\\n", '\r' => escaped += "\\r", '\t' => escaped += "\\t", '"' => escaped += "\\\"", '\\' => escaped += "\\", c if c.is_ascii_graphic() => escaped.push(c), c => { let encoded = c.encode_utf16(&mut utf16_buf); for utf16 in encoded { write!(&mut escaped, "\\u{:04X}", utf16).unwrap(); } } } } escaped } (Playground: https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&gist=afd0cd665574230dc9b579127763e041 ) I think it should be able to handle Unicode values higher than U+FFFF, but please write your tests to verify everything. More on reddit.com

First off I'd recommend posting in r/learnpython as you might get a few more replies over there. Second, you may consider breaking the problem in two. The are numerous ways to load Jason data into Python, with loading to a dict most likely the easiest. Thus you may find it easier to focus on how to translate the JSON data structure into your tree view items as the loading of the JSON shouldn't be difficult nor does it directly relate to PyQt. More on reddit.com

The Roku Developer Blog and the Roku forums have what you need. Can you be a bit more specific what you're looking for? There are tools available to generate the feed files.

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