implement PyTupleMethods

Author: davidhewitt

src/instance.rs

@@ -302,10 +302,10 @@ where
         unsafe { std::mem::transmute(gil_ref) }
     }
 
-    // pub(crate) fn into_gil_ref(self) -> &'py T::AsRefTarget {
-    //     // Safety: self is a borrow over `'py`.
-    //     unsafe { self.py().from_borrowed_ptr(self.0.as_ptr()) }
-    // }
+    pub(crate) fn into_gil_ref(self) -> &'py T::AsRefTarget {
+        // Safety: self is a borrow over `'py`.
+        unsafe { self.py().from_borrowed_ptr(self.0.as_ptr()) }
+    }
 }
 
 impl<T> std::fmt::Debug for Borrowed<'_, '_, T> {

src/prelude.rs

@@ -34,3 +34,4 @@ pub use crate::types::list::PyListMethods;
 pub use crate::types::mapping::PyMappingMethods;
 pub use crate::types::sequence::PySequenceMethods;
 pub use crate::types::string::PyStringMethods;
+pub use crate::types::tuple::PyTupleMethods;

src/types/mod.rs

@@ -304,5 +304,5 @@ pub(crate) mod set;
 mod slice;
 pub(crate) mod string;
 mod traceback;
-mod tuple;
+pub(crate) mod tuple;
 mod typeobject;