cobra4

A high-level, cloud-native language transpiled to Python.

cobra4 promotes patterns common in cloud automation, data pipelines, and distributed jobs to first-class language constructs. One line of cobra4 often replaces a small Python program.

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Three lines that show what cobra4 is

1. ETL across formats — read/save are smart-dispatched

rows   = read("./users.csv")
adults = each r in rows where int(r["age"]) >= 18 { r }
save(adults, "./adults.json")

2. Webhook server, with auth and pattern-matched routing

fn handler(req) {
    if req?.headers?.authorization != "Bearer secret" {
        return (401, {}, {"error": "nope"})
    }
    match (req.method, req.path) {
        case ("GET",  "/health") { return {"ok": true} }
        case ("POST", "/users")  { return create_user(req.json()) }
        case _                   { return (404, {}, {}) }
    }
}

serve handler on :8080

3. Scheduled job + parallel fan-out

urls = read("./targets.txt")

every 5 minutes {
    results = each url in urls in parallel(workers=10) { fetch(url) }
    save(results, "s3://bucket/snapshots/{now()}.jsonl")
}

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Mantra

1. Readability first — no esoteric operators (no |>), English keywords.
2. One line = one program — cloud / distributed patterns are syntax.
3. General-purpose — anything Python does, cobra4 does.
4. Extensible on two axes — libraries extend the runtime, language plugins (lang use sql) extend the parser/AST.