some python stuff

Cargo.toml

@@ -54,12 +54,12 @@ categories.workspace = true
 [features]
 default = ["log", "core"]
 core = []
-full = ["default", "core", "math", "log", "bintols", "net", "py"]
+full = ["default", "core", "math", "log", "bintols", "net"]
 math = ["dep:libpt-math", "log"]
 log = ["dep:libpt-log"]
 bintols = ["dep:libpt-bintols", "log"]
 net = ["dep:libpt-net", "log"]
-py = ["dep:libpt-py"]
+# py = ["dep:libpt-py"]
 
 [lib]
 name = "libpt"
@@ -75,4 +75,3 @@ libpt-bintols = { workspace = true, optional = true }
 libpt-log = { workspace = true, optional = true }
 libpt-math = { workspace = true, optional = true }
 libpt-net = { workspace = true, optional = true }
-libpt-py = { workspace = true, optional = true }

members/libpt-py/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "libpt-py"
-version = "0.3.11"
+version.workspace = true
 edition.workspace = true
 
 [package.metadata.maturin]
@@ -11,4 +11,14 @@ name = "libpt"
 crate-type = ["cdylib", "rlib"]
 
 [dependencies]
+libpt = { version = "0.3.11", path = "../.." }
 pyo3 = "0.19.0"
+
+[features]
+default = ["log", "core", "full"]
+core = []
+full = ["default", "core", "math", "log", "bintols", "net"]
+math = ["libpt/math", "log"]
+log = ["libpt/log"]
+bintols = ["libpt/bintols", "log"]
+net = ["libpt/net", "log"]

members/libpt-py/src/core/mod.rs

@@ -0,0 +1,11 @@
+use pyo3::prelude::*;
+
+/// implement a python module in Rust
+#[pymodule]
+#[pyo3(name = "core")]
+pub fn submodule(py: Python, m: &PyModule) -> PyResult<()> {
+    let submodule = PyModule::new(py, "submodule")?;
+    submodule.add("super_useful_constant", "important")?;
+    m.add_submodule(m)?;
+    Ok(())
+}

members/libpt-py/src/lib.rs

@@ -1,15 +1,23 @@
+//! Python bindings for [`libpt`](libpt)
+use libpt;
+
+#[cfg(feature = "core")]
+mod core;
+
 use pyo3::prelude::*;
 
-/// Formats the sum of two numbers as string.
+/// return the version of libpt
 #[pyfunction]
-fn sum_as_string(a: usize, b: usize) -> PyResult<String> {
+fn version() -> String {
-    Ok((a + b).to_string())
+    env!("CARGO_PKG_VERSION").to_string()
 }
 
-/// A Python module implemented in Rust.
+/// implement a python module in Rust
 #[pymodule]
 #[pyo3(name = "libpt")]
-fn libpt_py(_py: Python, m: &PyModule) -> PyResult<()> {
+fn libpt_py(py: Python, m: &PyModule) -> PyResult<()> {
-    m.add_function(wrap_pyfunction!(sum_as_string, m)?)?;
+    m.add_function(wrap_pyfunction!(version, m)?)?;
+    #[cfg(feature = "core")]
+    core::submodule(py, m)?;
     Ok(())
 }