Reorganize os module

derive/src/pymodule.rs

@@ -227,7 +227,7 @@ pub fn impl_pymodule(attr: AttributeArgs, item: Item) -> Result<TokenStream2, Di
     let extend_mod = extract_module_items(items, &module_name)?;
     content.extend(vec![
         parse_quote! {
-            const MODULE_NAME: &str = #module_name;
+            pub(crate) const MODULE_NAME: &str = #module_name;
         },
         parse_quote! {
             pub(crate) fn extend_module(

vm/src/stdlib/io.rs

@@ -626,7 +626,7 @@ mod fileio {
                     }
                     fd
                 } else {
-                    os::os_open(
+                    os::open(
                         os::PyPathLike::new_str(name.as_str().to_owned()),
                         mode as _,
                         OptionalArg::Missing,