chitralverma commented on code in PR #7812:
URL: https://github.com/apache/opendal/pull/7812#discussion_r3467453855


##########
bindings/python/src/lib.rs:
##########
@@ -43,72 +43,95 @@ use pyo3_stub_gen::{define_stub_info_gatherer, derive::*};
 pub use services::*;
 
 #[pymodule(gil_used = false)]
-fn _opendal(py: Python, m: &Bound<'_, PyModule>) -> PyResult<()> {
-    // Add version
-    m.add("__version__", env!("CARGO_PKG_VERSION"))?;
-
-    // Operator module
-    add_pymodule!(py, m, "operator", [Operator, AsyncOperator])?;
-
-    // File module
-    add_pymodule!(py, m, "file", [File, AsyncFile])?;
-
-    // Capability module
-    add_pymodule!(py, m, "capability", [Capability])?;
-
-    // Services module
-    add_pymodule!(py, m, "services", [PyScheme])?;
-
-    // Layers module
-    add_pymodule!(
-        py,
-        m,
-        "layers",
-        [
-            Layer,
-            CapabilityOverrideLayer,
-            RetryLayer,
-            ConcurrentLimitLayer,
-            MimeGuessLayer
-        ]
-    )?;
-
-    // Types module
-    add_pymodule!(
-        py,
-        m,
-        "types",
-        [Entry, EntryMode, Metadata, PresignedRequest]
-    )?;
-
-    m.add_class::<WriteOptions>()?;
-    m.add_class::<ReadOptions>()?;
-    m.add_class::<ListOptions>()?;
-    m.add_class::<StatOptions>()?;
-    m.add_class::<DeleteOptions>()?;
-
-    // Exceptions module
-    add_pyexceptions!(
-        py,
-        m,
-        "exceptions",
-        [
-            Error,
-            Unexpected,
-            Unsupported,
-            ConfigInvalid,
-            NotFound,
-            PermissionDenied,
-            IsADirectory,
-            NotADirectory,
-            AlreadyExists,
-            IsSameFile,
-            ConditionNotMatch,
-            RateLimited,
-            RangeNotSatisfied,
-        ]
-    )?;
-    Ok(())
+mod _opendal {

Review Comment:
   Yes — `mod _opendal` here *is* the declarative `#[pymodule] mod` form 
(converted from the old `fn _opendal`).
   
   It has to stay `_opendal`, not `opendal`: this is a mixed layout, so 
`module-name = "opendal._opendal"` builds `opendal/_opendal.*.so` and the 
hand-written `opendal/__init__.py` is the real package that re-exports from it. 
The mod name must match the `.so`'s last path component (`PyInit__opendal`). 
Naming it `opendal` would require the native module to *be* the top-level 
package, colliding with the `opendal/` package dir.



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