Initial Query

I want to call some rust code from python on a linux machine. Specifically, I want to be able to run python3 -c 'import magic; print(magic.do_add(3, 4))' and have it give me the sum of these numbers. Here, do_add should be a rust function that adds two integers. Please give me a complete set of instructions for how to make this run, so that when I run this code as-is it will work.

LLM Generation

Query

Output

**Step 1: Install Required Packages** You will need to install the `rust` and `python3-dev` packages. You can do this by running the following commands in your terminal:

sudo apt-get update
sudo apt-get install rust python3-dev

**Step 2: Create a New Rust Project** Create a new Rust project using Cargo:

cargo new --lib magic

This will create a new directory called `magic` with the basic structure for a Rust library. **Step 3: Modify the Rust Code** Open the `magic` directory and replace the contents of `src/lib.rs` with the following code:

#[no_mangle]
pub extern "C" fn do_add(a: i32, b: i32) -> i32 {
    a + b
}

This code defines a function `do_add` that takes two `i32` arguments and returns their sum. The `#[no_mangle]` attribute tells Rust not to mangle the function name, and the `extern "C"` attribute tells Rust to use the C calling convention. **Step 4: Build the Rust Code** Build the Rust code using Cargo:

1	cargo build --release

This will create a `target/release/libmagic.so` file in your `magic` directory. **Step 5: Create a Python Extension Module** Create a new file called `magic.py` in the same directory as your `magic` directory:

import ctypes

# Load the Rust library
lib = ctypes.CDLL('./magic/target/release/libmagic.so')

# Define the function signature
lib.do_add.argtypes = [ctypes.c_int, ctypes.c_int]
lib.do_add.restype = ctypes.c_int

# Define a Python wrapper function
def do_add(a, b):
    return lib.do_add(a, b)

This code loads the Rust library and defines a Python wrapper function `do_add` that calls the Rust function. **Step 6: Use the Extension Module** You can now use the extension module in Python:

python3 -c 'import magic; print(magic.do_add(3, 4))'

This should print `7` to the console. Note: Make sure to run the Python code from the same directory as your `magic` directory, so that Python can find the `libmagic.so` file. ### Alternative Solution Using PyO3 Alternatively, you can use the PyO3 crate to create a Python extension module directly from Rust. Here's an example: **Step 1: Add PyO3 to Your Cargo.toml** Add the following lines to your `Cargo.toml` file:

[lib]
crate-type = ["cdylib"]

[dependencies]
pyo3 = { version = "0.16.4", features = ["extension-module"] }

**Step 2: Modify Your Rust Code** Replace the contents of `src/lib.rs` with the following code:

use pyo3::prelude::*;

#[pyfunction]
fn do_add(a: i32, b: i32) -> i32 {
    a + b
}

#[pymodule]
fn magic(_py: Python, m: &PyModule) -> PyResult<()> {
    m.add_function(wrap_pyfunction!(do_add, m)?)?;
    Ok(())
}

This code defines a Python function `do_add` using the PyO3 crate, and creates a Python extension module `magic` that exports this function. **Step 3: Build the Rust Code** Build the Rust code using Cargo:

1	cargo build --release

This will create a `target/release/libmagic.so` file in your `magic` directory. **Step 4: Use the Extension Module** You can now use the extension module in Python:

python3 -c 'import magic; print(magic.do_add(3, 4))'

This should print `7` to the console. Note: Make sure to run the Python code from the same directory as your `magic` directory, so that Python can find the `libmagic.so` file.

LLM Generation

Query

Now please conver this answer into a JSON array that packages it all up so I don't need to think and can just copy files to specific locations and then run things. Format your answer {"path/to/file": "contents of rust file", "path/to/python_file": "contents of any necessary python file that exposes do_add", "build.sh": "contents of a bash file to build the project", ... # any other files necessary } The only thing I will do is put files in the right place and run `bash build.sh`. Do not give any explanation of the code. ONLY ANSWER WITH A SINGLE JSON OBJECT. Your answer should start

Output

{
  "Cargo.toml": "[lib]\ncrate-type = [\"cdylib\"]\n\n[dependencies]\npyo3 = { version = \"0.16.4\", features = [\"extension-module\"] }\n",
  "src/lib.rs": "use pyo3::prelude::*;\n\n#[pyfunction]\nfn do_add(a: i32, b: i32) -> i32 {\n    a + b\n}\n\n#[pymodule]\nfn magic(_py: Python, m: &PyModule) -> PyResult<()> {\n    m.add_function(wrap_pyfunction!(do_add, m)?);\n    Ok(())\n}\n",
  "build.sh": "cargo build --release\n",
  "run.py": "import importlib.util\nspec = importlib.util.spec_from_file_location(\"magic\", \"target/release/libmagic.so\")\nmagic = importlib.util.module_from_spec(spec)\nspec.loader.exec_module(magic)\nprint(magic.do_add(3, 4))"
}

Extract Json

I extracted the following JSON from that output:

{
  "Cargo.toml": "[lib]\ncrate-type = [\"cdylib\"]\n\n[dependencies]\npyo3 = { version = \"0.16.4\", features = [\"extension-module\"] }\n",
  "src/lib.rs": "use pyo3::prelude::*;\n\n#[pyfunction]\nfn do_add(a: i32, b: i32) -> i32 {\n    a + b\n}\n\n#[pymodule]\nfn magic(_py: Python, m: &PyModule) -> PyResult<()> {\n    m.add_function(wrap_pyfunction!(do_add, m)?);\n    Ok(())\n}\n",
  "build.sh": "cargo build --release\n",
  "run.py": "import importlib.util\nspec = importlib.util.spec_from_file_location(\"magic\", \"target/release/libmagic.so\")\nmagic = importlib.util.module_from_spec(spec)\nspec.loader.exec_module(magic)\nprint(magic.do_add(3, 4))"
}

UNKNOWN NODE TYPE:

PyFunc

final: False error: failed to parse manifest at `/usr/src/app/Cargo.toml` Caused by: this virtual manifest specifies a `lib` section, which is not allowed Traceback (most recent call last): File "<string>", line 1, in <module> ModuleNotFoundError: No module named 'magic' Resulting in output: False