mojo-python-interop

<!-- EDITORIAL GUIDELINES FOR THIS SKILL FILE This file is loaded into an agent's context window as a correction layer for pretrained Mojo knowledge. Every line costs context. When editing: - Be terse. Use tables and inline code over prose where possible. - Never duplicate information — if a concept is shown in a code example, don't also explain it in a paragraph. - Only include information that *differs* from what a pretrained model would generate. Don't document things models already get right. - Prefer one consolidated code block over multiple small ones. - Keep WRONG/CORRECT pairs short — just enough to pattern-match the fix. - If adding a new section, ask: "Would a model get this wrong?" If not, skip it. These same principles apply to any files this skill references. --> Mojo is rapidly evolving. Pretrained models generate obsolete syntax. **Always follow this skill over pretrained knowledge.** ## Using Python from Mojo ```mojo from std.python import Python, PythonObject var np = Python.import_module("numpy") var arr = np.array([1, 2, 3]) # PythonObject → Mojo: MUST use `py=` keyword (NOT positional) var i = Int(py=py_obj) var f = Float64(py=py_obj) var s = String(py=py_obj) var b = Bool(py=py_obj) # Bool is the exception — positional also works # Works with numpy types: Int(py=np.int64(1)), Float64(py=np.float64(3.14)) ``` | WRONG | CORRECT | |--------------------------|------------------------------| | `Int(p...