From d6baf21abcd3865e4a9cfefbe3375ad139e7efa0 Mon Sep 17 00:00:00 2001
From: Samuel Colvin <s@muelcolvin.com>
Date: Mon, 9 Dec 2024 12:43:48 +0000
Subject: [PATCH] uprev PyO3 and add python 3.13 support (#86)

---
 .github/workflows/ci.yml |   6 +-
 .python-version          |   2 +-
 Cargo.lock               | 208 ++++++++-------------------------------
 Cargo.toml               |   2 +-
 pyproject.toml           |   2 +
 src/datetime.rs          |  17 ++--
 src/de.rs                |  19 ++--
 src/lib.rs               |   7 +-
 src/ser.rs               |   2 +-
 uv.lock                  |  25 +++++
 10 files changed, 98 insertions(+), 192 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2c08f13..d1022df 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
 
     env:
       UV_PYTHON: ${{ matrix.python-version }}
@@ -152,7 +152,7 @@ jobs:
             python-architecture: x86
           - os: windows
             target: aarch64
-            interpreter: 3.11 3.12
+            interpreter: 3.11 3.12 3.13
 
     runs-on: ${{ (matrix.os == 'linux' && 'ubuntu') || matrix.os }}-latest
     steps:
@@ -184,7 +184,7 @@ jobs:
       with:
         target: ${{ matrix.target }}
         manylinux: ${{ matrix.manylinux || 'auto' }}
-        args: --release --out dist --interpreter ${{ matrix.interpreter || '3.9 3.10 3.11 3.12' }}
+        args: --release --out dist --interpreter ${{ matrix.interpreter || '3.9 3.10 3.11 3.12 3.13' }}
         rust-toolchain: stable
         docker-options: -e CI
       env:
diff --git a/.python-version b/.python-version
index 2c07333..24ee5b1 100644
--- a/.python-version
+++ b/.python-version
@@ -1 +1 @@
-3.11
+3.13
diff --git a/Cargo.lock b/Cargo.lock
index f41ccd8..5b122e3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "ahash"
@@ -17,15 +17,9 @@ dependencies = [
 
 [[package]]
 name = "autocfg"
-version = "1.3.0"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c4b4d0bd25bd0b74681c0ad21497610ce1b7c91b1022cd21c80c6fbdd9476b0"
-
-[[package]]
-name = "bitflags"
-version = "2.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf4b9d6a944f767f8e5e0db018570623c85f3d925ac718db4e06d0187adb21c1"
+checksum = "ace50bade8e6234aa140d9a2f552bbee1db4d353f69b8217bc503490fc1a9f26"
 
 [[package]]
 name = "cfg-if"
@@ -52,9 +46,9 @@ checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
 
 [[package]]
 name = "heck"
-version = "0.4.1"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95505c38b4572b2d910cecb0281560f54b440a19336cbbcb27bf6ce6adc6f5a8"
+checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
 [[package]]
 name = "indexmap"
@@ -74,19 +68,9 @@ checksum = "b248f5224d1d606005e02c97f5aa4e88eeb230488bcc03bc9ca4d7991399f2b5"
 
 [[package]]
 name = "libc"
-version = "0.2.155"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "97b3888a4aecf77e811145cadf6eef5901f4782c53886191b2f693f24761847c"
-
-[[package]]
-name = "lock_api"
-version = "0.4.12"
+version = "0.2.168"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "07af8b9cdd281b7915f413fa73f29ebd5d55d0d3f0155584dade1ff18cea1b17"
-dependencies = [
- "autocfg",
- "scopeguard",
-]
+checksum = "5aaeb2981e0606ca11d79718f8bb01164f1d6ed75080182d3abf017e6d244b6d"
 
 [[package]]
 name = "memoffset"
@@ -105,59 +89,36 @@ checksum = "2bf50223579dc7cdcfb3bfcacf7069ff68243f8c363f62ffa99cf000a6b9c451"
 
 [[package]]
 name = "once_cell"
-version = "1.19.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
-
-[[package]]
-name = "parking_lot"
-version = "0.12.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1bf18183cf54e8d6059647fc3063646a1801cf30896933ec2311622cc4b9a27"
-dependencies = [
- "lock_api",
- "parking_lot_core",
-]
-
-[[package]]
-name = "parking_lot_core"
-version = "0.9.10"
+version = "1.20.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e401f977ab385c9e4e3ab30627d6f26d00e2c73eef317493c4ec6d468726cf8"
-dependencies = [
- "cfg-if",
- "libc",
- "redox_syscall",
- "smallvec",
- "windows-targets",
-]
+checksum = "1261fe7e33c73b354eab43b1273a57c8f967d0391e80353e51f764ac02cf6775"
 
 [[package]]
 name = "portable-atomic"
-version = "1.6.0"
+version = "1.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7170ef9988bc169ba16dd36a7fa041e5c4cbeb6a35b76d4c03daded371eae7c0"
+checksum = "280dc24453071f1b63954171985a0b0d30058d287960968b9b2aca264c8d4ee6"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.86"
+version = "1.0.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5e719e8df665df0d1c8fbfd238015744736151d4445ec0836b8e628aae103b77"
+checksum = "37d3544b3f2748c54e147655edb5025752e2303145b5aefb3c3ea2c78b973bb0"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "pyo3"
-version = "0.21.2"
+version = "0.23.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a5e00b96a521718e08e03b1a622f01c8a8deb50719335de3f60b3b3950f069d8"
+checksum = "e484fd2c8b4cb67ab05a318f1fd6fa8f199fcc30819f08f07d200809dba26c15"
 dependencies = [
  "cfg-if",
  "indoc",
  "libc",
  "memoffset",
- "parking_lot",
+ "once_cell",
  "portable-atomic",
  "pyo3-build-config",
  "pyo3-ffi",
@@ -167,9 +128,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-build-config"
-version = "0.21.2"
+version = "0.23.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7883df5835fafdad87c0d888b266c8ec0f4c9ca48a5bed6bbb592e8dedee1b50"
+checksum = "dc0e0469a84f208e20044b98965e1561028180219e35352a2afaf2b942beff3b"
 dependencies = [
  "once_cell",
  "target-lexicon",
@@ -177,9 +138,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-ffi"
-version = "0.21.2"
+version = "0.23.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "01be5843dc60b916ab4dad1dca6d20b9b4e6ddc8e15f50c47fe6d85f1fb97403"
+checksum = "eb1547a7f9966f6f1a0f0227564a9945fe36b90da5a93b3933fc3dc03fae372d"
 dependencies = [
  "libc",
  "pyo3-build-config",
@@ -187,9 +148,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros"
-version = "0.21.2"
+version = "0.23.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77b34069fc0682e11b31dbd10321cbf94808394c56fd996796ce45217dfac53c"
+checksum = "fdb6da8ec6fa5cedd1626c886fc8749bdcbb09424a86461eb8cdf096b7c33257"
 dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
@@ -199,9 +160,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros-backend"
-version = "0.21.2"
+version = "0.23.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08260721f32db5e1a5beae69a55553f56b99bd0e1c3e6e0a5e8851a9d0f5a85c"
+checksum = "38a385202ff5a92791168b1136afae5059d3ac118457bb7bc304c197c2d33e7d"
 dependencies = [
  "heck",
  "proc-macro2",
@@ -212,22 +173,13 @@ dependencies = [
 
 [[package]]
 name = "quote"
-version = "1.0.36"
+version = "1.0.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0fa76aaf39101c457836aec0ce2316dbdc3ab723cdda1c6bd4e6ad4208acaca7"
+checksum = "b5b9d34b8991d19d98081b46eacdd8eb58c6f2b201139f7c5f643cc155a633af"
 dependencies = [
  "proc-macro2",
 ]
 
-[[package]]
-name = "redox_syscall"
-version = "0.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c82cf8cff14456045f55ec4241383baeff27af886adb72ffb2162f99911de0fd"
-dependencies = [
- "bitflags",
-]
-
 [[package]]
 name = "rtoml"
 version = "0.11.0"
@@ -239,43 +191,31 @@ dependencies = [
  "toml",
 ]
 
-[[package]]
-name = "scopeguard"
-version = "1.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
-
 [[package]]
 name = "serde"
-version = "1.0.203"
+version = "1.0.215"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7253ab4de971e72fb7be983802300c30b5a7f0c2e56fab8abfc6a214307c0094"
+checksum = "6513c1ad0b11a9376da888e3e0baa0077f1aed55c17f50e7b2397136129fb88f"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.203"
+version = "1.0.215"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "500cbc0ebeb6f46627f50f3f5811ccf6bf00643be300b4c3eabc0ef55dc5b5ba"
+checksum = "ad1e866f866923f252f05c889987993144fb74e722403468a4ebd70c3cd756c0"
 dependencies = [
  "proc-macro2",
  "quote",
  "syn",
 ]
 
-[[package]]
-name = "smallvec"
-version = "1.13.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3c5e1a9a646d36c3599cd173a41282daf47c44583ad367b8e6837255952e5c67"
-
 [[package]]
 name = "syn"
-version = "2.0.68"
+version = "2.0.90"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "901fa70d88b9d6c98022e23b4136f9f3e54e4662c3bc1bd1d84a42a9a0f0c1e9"
+checksum = "919d3b74a5dd0ccd15aeb8f93e7006bd9e14c295087c9896a110f490752bcf31"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -284,9 +224,9 @@ dependencies = [
 
 [[package]]
 name = "target-lexicon"
-version = "0.12.14"
+version = "0.12.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e1fc403891a21bcfb7c37834ba66a547a8f402146eba7265b5a6d88059c9ff2f"
+checksum = "61c41af27dd6d1e27b1b16b489db798443478cef1f06a660c96db617ba5de3b1"
 
 [[package]]
 name = "toml"
@@ -300,9 +240,9 @@ dependencies = [
 
 [[package]]
 name = "unicode-ident"
-version = "1.0.12"
+version = "1.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
+checksum = "adb9e6ca4f869e1180728b7950e35922a7fc6397f7b641499e8f3ef06e50dc83"
 
 [[package]]
 name = "unindent"
@@ -312,9 +252,9 @@ checksum = "c7de7d73e1754487cb58364ee906a499937a0dfabd86bcb980fa99ec8c8fa2ce"
 
 [[package]]
 name = "version_check"
-version = "0.9.4"
+version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
+checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
 
 [[package]]
 name = "wasi"
@@ -322,84 +262,20 @@ version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
-[[package]]
-name = "windows-targets"
-version = "0.52.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6f0713a46559409d202e70e28227288446bf7841d3211583a4b53e3f6d96e7eb"
-dependencies = [
- "windows_aarch64_gnullvm",
- "windows_aarch64_msvc",
- "windows_i686_gnu",
- "windows_i686_gnullvm",
- "windows_i686_msvc",
- "windows_x86_64_gnu",
- "windows_x86_64_gnullvm",
- "windows_x86_64_msvc",
-]
-
-[[package]]
-name = "windows_aarch64_gnullvm"
-version = "0.52.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7088eed71e8b8dda258ecc8bac5fb1153c5cffaf2578fc8ff5d61e23578d3263"
-
-[[package]]
-name = "windows_aarch64_msvc"
-version = "0.52.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9985fd1504e250c615ca5f281c3f7a6da76213ebd5ccc9561496568a2752afb6"
-
-[[package]]
-name = "windows_i686_gnu"
-version = "0.52.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "88ba073cf16d5372720ec942a8ccbf61626074c6d4dd2e745299726ce8b89670"
-
-[[package]]
-name = "windows_i686_gnullvm"
-version = "0.52.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87f4261229030a858f36b459e748ae97545d6f1ec60e5e0d6a3d32e0dc232ee9"
-
-[[package]]
-name = "windows_i686_msvc"
-version = "0.52.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db3c2bf3d13d5b658be73463284eaf12830ac9a26a90c717b7f771dfe97487bf"
-
-[[package]]
-name = "windows_x86_64_gnu"
-version = "0.52.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4e4246f76bdeff09eb48875a0fd3e2af6aada79d409d33011886d3e1581517d9"
-
-[[package]]
-name = "windows_x86_64_gnullvm"
-version = "0.52.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "852298e482cd67c356ddd9570386e2862b5673c85bd5f88df9ab6802b334c596"
-
-[[package]]
-name = "windows_x86_64_msvc"
-version = "0.52.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bec47e5bfd1bff0eeaf6d8b485cc1074891a197ab4225d504cb7a1ab88b02bf0"
-
 [[package]]
 name = "zerocopy"
-version = "0.7.34"
+version = "0.7.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ae87e3fcd617500e5d106f0380cf7b77f3c6092aae37191433159dda23cfb087"
+checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"
 dependencies = [
  "zerocopy-derive",
 ]
 
 [[package]]
 name = "zerocopy-derive"
-version = "0.7.34"
+version = "0.7.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "15e934569e47891f7d9411f1a451d947a60e000ab3bd24fbb970f000387d1b3b"
+checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/Cargo.toml b/Cargo.toml
index f4af497..b826c5a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2021"
 [dependencies]
 toml = {version = "0.5.9", features = ["preserve_order"]}
 serde = "1.0.126"
-pyo3 = "0.21.2"
+pyo3 = "0.23.3"
 ahash = "0.8.1"
 nohash-hasher = "0.2.0"
 
diff --git a/pyproject.toml b/pyproject.toml
index fa9fc7e..917cdf0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,6 +17,7 @@ classifiers = [
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "Intended Audience :: Developers",
     "Intended Audience :: Information Technology",
     "Intended Audience :: System Administrators",
@@ -44,6 +45,7 @@ Source = "https://github.com/samuelcolvin/rtoml"
 dev = [
     "coverage[toml]>=7.6.9",
     "dirty-equals>=0.8.0",
+    "maturin>=1.7.8",
     "pytest>=8.3.4",
     "pytest-pretty>=1.2.0",
     "pytest-speed>=0.3.5",
diff --git a/src/datetime.rs b/src/datetime.rs
index 0524b6d..539011d 100644
--- a/src/datetime.rs
+++ b/src/datetime.rs
@@ -1,5 +1,6 @@
 use pyo3::prelude::*;
 use pyo3::types::{PyDate, PyDateTime, PyDelta, PyTime, PyTzInfo};
+use pyo3::IntoPyObjectExt;
 
 use toml::value::{Datetime as TomlDatetime, Offset as TomlOffset};
 
@@ -17,7 +18,7 @@ pub fn parse(py: Python, datetime: &TomlDatetime) -> PyResult<PyObject> {
                 None => None,
             };
 
-            PyDateTime::new_bound(
+            let dt = PyDateTime::new(
                 py,
                 date.year as i32,
                 date.month,
@@ -27,13 +28,11 @@ pub fn parse(py: Python, datetime: &TomlDatetime) -> PyResult<PyObject> {
                 t.second,
                 t.nanosecond / 1000,
                 tz_info.as_ref(),
-            )
-            .map(|dt| dt.to_object(py))
-        }
-        (Some(date), None) => PyDate::new_bound(py, date.year as i32, date.month, date.day).map(|d| d.to_object(py)),
-        (None, Some(t)) => {
-            PyTime::new_bound(py, t.hour, t.minute, t.second, t.nanosecond / 1000, None).map(|t| t.to_object(py))
+            )?;
+            Ok(dt.into_py_any(py)?)
         }
+        (Some(date), None) => Ok(PyDate::new(py, date.year as i32, date.month, date.day)?.into_py_any(py)?),
+        (None, Some(t)) => Ok(PyTime::new(py, t.hour, t.minute, t.second, t.nanosecond / 1000, None)?.into_py_any(py)?),
         (None, None) => {
             // AFAIK this can't actually happen
             unreachable!("either time or date (or both) are required")
@@ -59,14 +58,14 @@ impl TzInfo {
     }
 
     fn utcoffset<'py>(&self, dt: &Bound<'py, PyDateTime>) -> PyResult<Bound<'py, PyDelta>> {
-        PyDelta::new_bound(dt.py(), 0, self.seconds(), 0, true)
+        PyDelta::new(dt.py(), 0, self.seconds(), 0, true)
     }
 
     fn tzname(&self, _dt: &Bound<'_, PyAny>) -> String {
         self.__str__()
     }
 
-    fn dst(&self, _dt: &Bound<'_, PyAny>) -> Option<&PyDelta> {
+    fn dst<'py>(&self, _dt: &Bound<'py, PyAny>) -> Option<Bound<'py, PyDelta>> {
         None
     }
 
diff --git a/src/de.rs b/src/de.rs
index 7a87800..ce84167 100644
--- a/src/de.rs
+++ b/src/de.rs
@@ -6,6 +6,7 @@ use std::str::FromStr;
 
 use pyo3::prelude::*;
 use pyo3::types::PyDict;
+use pyo3::IntoPyObjectExt;
 
 use ahash::RandomState;
 use nohash_hasher::NoHashHasher;
@@ -51,28 +52,28 @@ impl<'de> Visitor<'de> for PyDeserializer<'_> {
     where
         E: de::Error,
     {
-        Ok(value.into_py(self.py))
+        value.into_py_any(self.py).map_err(de::Error::custom)
     }
 
     fn visit_i64<E>(self, value: i64) -> Result<Self::Value, E>
     where
         E: de::Error,
     {
-        Ok(value.into_py(self.py))
+        value.into_py_any(self.py).map_err(de::Error::custom)
     }
 
     fn visit_u64<E>(self, value: u64) -> Result<Self::Value, E>
     where
         E: de::Error,
     {
-        Ok(value.into_py(self.py))
+        value.into_py_any(self.py).map_err(de::Error::custom)
     }
 
     fn visit_f64<E>(self, value: f64) -> Result<Self::Value, E>
     where
         E: de::Error,
     {
-        Ok(value.into_py(self.py))
+        value.into_py_any(self.py).map_err(de::Error::custom)
     }
 
     fn visit_str<E>(self, value: &str) -> Result<Self::Value, E>
@@ -81,7 +82,7 @@ impl<'de> Visitor<'de> for PyDeserializer<'_> {
     {
         match self.none_value {
             Some(none_value) if value == none_value => Ok(self.py.None()),
-            _ => Ok(value.into_py(self.py)),
+            _ => value.into_py_any(self.py).map_err(de::Error::custom),
         }
     }
 
@@ -99,7 +100,7 @@ impl<'de> Visitor<'de> for PyDeserializer<'_> {
             elements.push(elem);
         }
 
-        Ok(elements.into_py(self.py))
+        elements.into_py_any(self.py).map_err(de::Error::custom)
     }
 
     fn visit_map<A>(self, mut map_access: A) -> Result<Self::Value, A::Error>
@@ -119,7 +120,7 @@ impl<'de> Visitor<'de> for PyDeserializer<'_> {
                 let mut key_set = NoHashSet::<u64>::with_hasher(BuildHasherDefault::default());
                 key_set.insert(hash_builder.hash_one(&first_key));
 
-                let dict = PyDict::new_bound(self.py);
+                let dict = PyDict::new(self.py);
                 dict.set_item(first_key, first_value).map_err(de::Error::custom)?;
 
                 while let Some((key, value)) =
@@ -132,9 +133,9 @@ impl<'de> Visitor<'de> for PyDeserializer<'_> {
                     }
                 }
 
-                Ok(dict.into_py(self.py))
+                dict.into_py_any(self.py).map_err(de::Error::custom)
             }
-            None => Ok(PyDict::new_bound(self.py).into_py(self.py)),
+            None => PyDict::new(self.py).into_py_any(self.py).map_err(de::Error::custom),
         }
     }
 }
diff --git a/src/lib.rs b/src/lib.rs
index 8c50a3d..be1840b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -16,6 +16,7 @@ create_exception!(_rtoml, TomlParsingError, PyValueError);
 create_exception!(_rtoml, TomlSerializationError, PyValueError);
 
 #[pyfunction]
+#[pyo3(signature = (toml_data, none_value=None))]
 fn deserialize(py: Python, toml_data: String, none_value: Option<&str>) -> PyResult<PyObject> {
     let mut deserializer = Deserializer::new(&toml_data);
     let seed = de::PyDeserializer::new(py, none_value);
@@ -24,6 +25,7 @@ fn deserialize(py: Python, toml_data: String, none_value: Option<&str>) -> PyRes
 }
 
 #[pyfunction]
+#[pyo3(signature = (obj, none_value=None))]
 fn serialize(py: Python, obj: Bound<'_, PyAny>, none_value: Option<&str>) -> PyResult<String> {
     let s = SerializePyObject::new(py, obj, none_value);
     match to_toml_string(&s) {
@@ -33,6 +35,7 @@ fn serialize(py: Python, obj: Bound<'_, PyAny>, none_value: Option<&str>) -> PyR
 }
 
 #[pyfunction]
+#[pyo3(signature = (obj, none_value=None))]
 fn serialize_pretty(py: Python, obj: Bound<'_, PyAny>, none_value: Option<&str>) -> PyResult<String> {
     let s = SerializePyObject::new(py, obj, none_value);
     match to_toml_string_pretty(&s) {
@@ -53,8 +56,8 @@ pub fn get_version() -> String {
 
 #[pymodule]
 fn _rtoml(py: Python, m: &Bound<'_, PyModule>) -> PyResult<()> {
-    m.add("TomlParsingError", py.get_type_bound::<TomlParsingError>())?;
-    m.add("TomlSerializationError", py.get_type_bound::<TomlSerializationError>())?;
+    m.add("TomlParsingError", py.get_type::<TomlParsingError>())?;
+    m.add("TomlSerializationError", py.get_type::<TomlSerializationError>())?;
     let version = get_version();
     m.add("__version__", version.clone())?;
     // keep VERSION for compatibility
diff --git a/src/ser.rs b/src/ser.rs
index b5b0986..b423f1e 100644
--- a/src/ser.rs
+++ b/src/ser.rs
@@ -176,7 +176,7 @@ fn table_key<'py, E: SerError>(key: &'py Bound<'py, PyAny>, none_value: Option<&
 
 fn any_repr(obj: &Bound<'_, PyAny>) -> String {
     let typ = obj.get_type();
-    let name = typ.name().unwrap_or_else(|_| "unknown".into());
+    let name = typ.name().unwrap_or_else(|_| PyString::new(obj.py(), "unknown"));
     match obj.repr() {
         Ok(repr) => format!("{repr} ({name})"),
         Err(_) => name.to_string(),
diff --git a/uv.lock b/uv.lock
index eae391b..2cae898 100644
--- a/uv.lock
+++ b/uv.lock
@@ -135,6 +135,29 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/42/d7/1ec15b46af6af88f19b8e5ffea08fa375d433c998b8a7639e76935c14f1f/markdown_it_py-3.0.0-py3-none-any.whl", hash = "sha256:355216845c60bd96232cd8d8c40e8f9765cc86f46880e43a8fd22dc1a1a8cab1", size = 87528 },
 ]
 
+[[package]]
+name = "maturin"
+version = "1.7.8"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "tomli", marker = "python_full_version < '3.11'" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/ab/1e/085ddc0e5b08ae7af7a743a0dd6ed06b22a1332288488f1a333137885150/maturin-1.7.8.tar.gz", hash = "sha256:649c6ef3f0fa4c5f596140d761dc5a4d577c485cc32fb5b9b344a8280352880d", size = 195704 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/7e/ed/c8bb26e91c879e418ae1b01630722ed20b6fe0e6755be8d538d83666f136/maturin-1.7.8-py3-none-linux_armv6l.whl", hash = "sha256:c6950fd2790acd93265e1501cea66f9249cff19724654424ca75a3b17ebb315b", size = 7515691 },
+    { url = "https://files.pythonhosted.org/packages/38/7a/573f969315f0b92a09a0a565d45e98812c87796e2e19a7856159ab234faf/maturin-1.7.8-py3-none-macosx_10_12_x86_64.macosx_11_0_arm64.macosx_10_12_universal2.whl", hash = "sha256:f98288d5c382bacf0c076871dfd50c38f1eb2248f417551e98dd6f47f6ee8afa", size = 14434454 },
+    { url = "https://files.pythonhosted.org/packages/a6/17/46834841fbf19231487f185e68b95ca348cc05cce49be8787e0bc7e9dc47/maturin-1.7.8-py3-none-macosx_10_12_x86_64.whl", hash = "sha256:b2d4e0f674ca29864e6b86c2eb9fee8236d1c7496c25f7300e34229272468f4c", size = 7509122 },
+    { url = "https://files.pythonhosted.org/packages/c1/8f/bf8b4871eb390a4baef2e0bb5016852c7c0311a9772e2945534cfa2ee40e/maturin-1.7.8-py3-none-manylinux_2_12_i686.manylinux2010_i686.musllinux_1_1_i686.whl", hash = "sha256:6cafb17bf57822bdc04423d9e3e766d42918d474848fe9833e397267514ba891", size = 7598870 },
+    { url = "https://files.pythonhosted.org/packages/dc/43/c842be67a7c59568082345249b956138ae93d0b2474fb41c186ce26d05e1/maturin-1.7.8-py3-none-manylinux_2_12_x86_64.manylinux2010_x86_64.musllinux_1_1_x86_64.whl", hash = "sha256:2b2bdee0c3a84696b3a809054c43ead1a04b7b3321cbd5b8f5676e4ba4691d0f", size = 7932310 },
+    { url = "https://files.pythonhosted.org/packages/12/12/42435d05f2d6c75eb621751e6f021d29eb34d18e3b9c5c94d828744c2d54/maturin-1.7.8-py3-none-manylinux_2_17_aarch64.manylinux2014_aarch64.musllinux_1_1_aarch64.whl", hash = "sha256:b8188b71259fc2bc568d9c8acc186fcfed96f42539bcb55b8e6f4ec26e411f37", size = 7321964 },
+    { url = "https://files.pythonhosted.org/packages/b4/26/f3272ee985ebf9b3e8c4cd4f4efb022af1e12c9f53aed0dcc9a255399f4e/maturin-1.7.8-py3-none-manylinux_2_17_armv7l.manylinux2014_armv7l.musllinux_1_1_armv7l.whl", hash = "sha256:a4f58c2a53c2958a1bf090960b08b28e676136cd88ac2f5dfdcf1b14ea54ec06", size = 7408613 },
+    { url = "https://files.pythonhosted.org/packages/36/7d/be27bcc7d3ac6e6c2136a8ec0cc56f227a292d6cfdde55e095b6c0aa24a9/maturin-1.7.8-py3-none-manylinux_2_17_ppc64le.manylinux2014_ppc64le.musllinux_1_1_ppc64le.whl", hash = "sha256:c5d6c0c631d1fc646cd3834795e6cfd72ab4271d289df7e0f911261a02bec75f", size = 9496974 },
+    { url = "https://files.pythonhosted.org/packages/e1/e8/0d7323e9a31c11edf69c4473d73eca74803ce3e2390abf8ae3ac7eb10b04/maturin-1.7.8-py3-none-manylinux_2_17_s390x.manylinux2014_s390x.whl", hash = "sha256:c23664d19dadcbf800ef70f26afb2e0485a985c62889930934f019c565534c23", size = 10828401 },
+    { url = "https://files.pythonhosted.org/packages/7e/82/5080e052c0d8c9872f6d4b94cae84c17ed7f2ea270d709210ea6445b655f/maturin-1.7.8-py3-none-win32.whl", hash = "sha256:403eebf1afa6f19b49425f089e39c53b8e597bc86a47f3a76e828dc78d27fa80", size = 6845240 },
+    { url = "https://files.pythonhosted.org/packages/6d/c9/9b162361ded893f36038c2f8ac6a972ec441c11df8d17c440997eb28090f/maturin-1.7.8-py3-none-win_amd64.whl", hash = "sha256:1ce48d007438b895f8665314b6748ac0dab31e4f32049a60b52281dd2dccbdde", size = 7762332 },
+    { url = "https://files.pythonhosted.org/packages/fa/40/46d4742db742f69a7fe0054cd7c82bc79b2d70cb8c91f7e737e75c28a5f3/maturin-1.7.8-py3-none-win_arm64.whl", hash = "sha256:cc92a62953205e8945b6cfe6943d6a8576a4442d30d9c67141f944f4f4640e62", size = 6501353 },
+]
+
 [[package]]
 name = "mdurl"
 version = "0.1.2"
@@ -286,6 +309,7 @@ source = { editable = "." }
 dev = [
     { name = "coverage", extra = ["toml"] },
     { name = "dirty-equals" },
+    { name = "maturin" },
     { name = "pytest" },
     { name = "pytest-pretty" },
     { name = "pytest-speed" },
@@ -301,6 +325,7 @@ lint = [
 dev = [
     { name = "coverage", extras = ["toml"], specifier = ">=7.6.9" },
     { name = "dirty-equals", specifier = ">=0.8.0" },
+    { name = "maturin", specifier = ">=1.7.8" },
     { name = "pytest", specifier = ">=8.3.4" },
     { name = "pytest-pretty", specifier = ">=1.2.0" },
     { name = "pytest-speed", specifier = ">=0.3.5" },