ppi rust开发 python调用

创建python的一个测试工程

python -m venv venv 
.\venv\Scripts\activate

 pip install cffi

创建一个rust的lib项目

cargo new --lib pyrust

• lib.rs

#[no_mangle]
pub extern "C" fn rust_add(x: i32, y: i32) -> i32 {
    x + y
}

• Cargo.toml

[package]
name = "pyrust"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]

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

• 构建

cargo build --release

python调用ffi

• .so for Linux
• .dll for Windows
• .dylib for MacOS

import cffi

ffi = cffi.FFI()

ffi.cdef(
  """
    int rust_add(int x, int y);
  """
)

C = ffi.dlopen('./pyrust/target/release/pyrust.dll')

res = C.rust_add(12, 5)
print(res)

python main.py