Bump PyO3 to 0.20 (#110)

* tokio_test: add panic message into exception string

* test adding module to export panic type

* get compiling

* fix macros build

* Fix some stuff

* fix build for async_std and tokio

* Bump PyO3 to 0.20

* Fixed compilation errors in panic message change

* Bumped MSRV

* Updated docs

---------

Co-authored-by: Chris Gregory <[email protected]>
Co-authored-by: Giovanni Barillari <[email protected]>

Author: 3 people

.github/workflows/ci.yml

@@ -91,7 +91,7 @@ jobs:
             platform: { os: "windows-latest", python-architecture: "x86" }
         include:
           # Test minimal supported Rust version
-          - rust: 1.62.0
+          - rust: 1.63.0
             python-version: "3.10"
             platform:
               {
@@ -155,9 +155,6 @@ jobs:
     env:
       RUST_BACKTRACE: 1
       RUSTFLAGS: "-D warnings"
-      # TODO: this is a hack to workaround compile_error! warnings about auto-initialize on PyPy
-      # Once cargo's `resolver = "2"` is stable (~ MSRV Rust 1.52), remove this.
-      PYO3_CI: 1
 
   coverage:
     needs: [fmt]

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "pyo3-asyncio"
 description = "PyO3 utilities for Python's Asyncio library"
-version = "0.19.0"
+version = "0.20.0"
 authors = ["Andrew J Westlake <[email protected]>"]
 readme = "README.md"
 keywords = ["pyo3", "python", "ffi", "async", "asyncio"]
@@ -116,11 +116,11 @@ futures = "0.3"
 inventory = { version = "0.3", optional = true }
 once_cell = "1.14"
 pin-project-lite = "0.2"
-pyo3 = "0.19"
-pyo3-asyncio-macros = { path = "pyo3-asyncio-macros", version = "=0.19.0", optional = true }
+pyo3 = "0.20"
+pyo3-asyncio-macros = { path = "pyo3-asyncio-macros", version = "=0.20.0", optional = true }
 
 [dev-dependencies]
-pyo3 = { version = "0.19", features = ["macros"] }
+pyo3 = { version = "0.20", features = ["macros"] }
 
 [dependencies.async-std]
 version = "1.12"

README.md

@@ -3,7 +3,7 @@
 [![Actions Status](https://github.com/awestlake87/pyo3-asyncio/workflows/CI/badge.svg)](https://github.com/awestlake87/pyo3-asyncio/actions)
 [![codecov](https://codecov.io/gh/awestlake87/pyo3-asyncio/branch/master/graph/badge.svg)](https://codecov.io/gh/awestlake87/pyo3-asyncio)
 [![crates.io](https://img.shields.io/crates/v/pyo3-asyncio)](https://crates.io/crates/pyo3-asyncio)
-[![minimum rustc 1.62](https://img.shields.io/badge/rustc-1.62+-blue.svg)](https://rust-lang.github.io/rfcs/2495-min-rust-version.html)
+[![minimum rustc 1.63](https://img.shields.io/badge/rustc-1.63+-blue.svg)](https://rust-lang.github.io/rfcs/2495-min-rust-version.html)
 
 [Rust](http://www.rust-lang.org/) bindings for [Python](https://www.python.org/)'s [Asyncio Library](https://docs.python.org/3/library/asyncio.html). This crate facilitates interactions between Rust Futures and Python Coroutines and manages the lifecycle of their corresponding event loops.
 
@@ -52,8 +52,8 @@ Here we initialize the runtime, import Python's `asyncio` library and run the gi
 ```toml
 # Cargo.toml dependencies
 [dependencies]
-pyo3 = { version = "0.19" }
-pyo3-asyncio = { version = "0.19", features = ["attributes", "async-std-runtime"] }
+pyo3 = { version = "0.20" }
+pyo3-asyncio = { version = "0.20", features = ["attributes", "async-std-runtime"] }
 async-std = "1.9"
 ```
 
@@ -82,8 +82,8 @@ attribute.
 ```toml
 # Cargo.toml dependencies
 [dependencies]
-pyo3 = { version = "0.19" }
-pyo3-asyncio = { version = "0.19", features = ["attributes", "tokio-runtime"] }
+pyo3 = { version = "0.20" }
+pyo3-asyncio = { version = "0.20", features = ["attributes", "tokio-runtime"] }
 tokio = "1.9"
 ```
 
@@ -127,17 +127,17 @@ For `async-std`:
 
 ```toml
 [dependencies]
-pyo3 = { version = "0.19", features = ["extension-module"] }
-pyo3-asyncio = { version = "0.19", features = ["async-std-runtime"] }
+pyo3 = { version = "0.20", features = ["extension-module"] }
+pyo3-asyncio = { version = "0.20", features = ["async-std-runtime"] }
 async-std = "1.9"
 ```
 
 For `tokio`:
 
 ```toml
 [dependencies]
-pyo3 = { version = "0.19", features = ["extension-module"] }
-pyo3-asyncio = { version = "0.19", features = ["tokio-runtime"] }
+pyo3 = { version = "0.20", features = ["extension-module"] }
+pyo3-asyncio = { version = "0.20", features = ["tokio-runtime"] }
 tokio = "1.9"
 ```
 
@@ -431,8 +431,8 @@ name = "my_async_module"
 crate-type = ["cdylib"]
 
 [dependencies]
-pyo3 = { version = "0.19", features = ["extension-module"] }
-pyo3-asyncio = { version = "0.19", features = ["tokio-runtime"] }
+pyo3 = { version = "0.20", features = ["extension-module"] }
+pyo3-asyncio = { version = "0.20", features = ["tokio-runtime"] }
 async-std = "1.9"
 tokio = "1.9"
 ```
@@ -491,8 +491,8 @@ event loop before we can install the `uvloop` policy.
 ```toml
 [dependencies]
 async-std = "1.9"
-pyo3 = "0.19"
-pyo3-asyncio = { version = "0.19", features = ["async-std-runtime"] }
+pyo3 = "0.20"
+pyo3-asyncio = { version = "0.20", features = ["async-std-runtime"] }
 ```
 
 ```rust no_run

pyo3-asyncio-macros/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "pyo3-asyncio-macros"
 description = "Proc Macro Attributes for PyO3 Asyncio"
-version = "0.19.0"
+version = "0.20.0"
 authors = ["Andrew J Westlake <[email protected]>"]
 readme = "../README.md"
 keywords = ["pyo3", "python", "ffi", "async", "asyncio"]
@@ -18,4 +18,4 @@ proc-macro = true
 [dependencies]
 proc-macro2 = "1.0"
 quote = "1"
-syn = { version = "1", features = ["full"] }
+syn = { version = "1", features = ["full"] }

pyo3-asyncio-macros/src/lib.rs

@@ -250,7 +250,15 @@ pub fn tokio_test(_attr: TokenStream, item: TokenStream) -> TokenStream {
                         Ok(result) => result,
                         Err(e) => {
                             assert!(e.is_panic());
-                            Err(pyo3::exceptions::PyException::new_err("rust future panicked"))
+                            let panic = e.into_panic();
+                            let panic_message = if let Some(s) = panic.downcast_ref::<&str>() {
+                                s.to_string()
+                            } else if let Some(s) = panic.downcast_ref::<String>() {
+                                s.clone()
+                            } else {
+                                "unknown error".into()
+                            };
+                            Err(pyo3_asyncio::err::RustPanic::new_err(format!("rust future panicked: {}", panic_message)))
                         }
                     }
                 })
@@ -265,7 +273,15 @@ pub fn tokio_test(_attr: TokenStream, item: TokenStream) -> TokenStream {
                         Ok(result) => result,
                         Err(e) => {
                             assert!(e.is_panic());
-                            Err(pyo3::exceptions::PyException::new_err("rust future panicked"))
+                            let panic = e.into_panic();
+                            let panic_message = if let Some(s) = panic.downcast_ref::<&str>() {
+                                s.to_string()
+                            } else if let Some(s) = panic.downcast_ref::<String>() {
+                                s.clone()
+                            } else {
+                                "unknown error".into()
+                            };
+                            Err(pyo3_asyncio::err::RustPanic::new_err(format!("rust future panicked: {}", panic_message)))
                         }
                     }
                 })

src/async_std.rs

@@ -9,7 +9,7 @@
 //!
 //! ```toml
 //! [dependencies.pyo3-asyncio]
-//! version = "0.19"
+//! version = "0.20"
 //! features = ["unstable-streams"]
 //! ```
 
@@ -48,6 +48,9 @@ impl JoinError for AsyncStdJoinErr {
     fn is_panic(&self) -> bool {
         true
     }
+    fn into_panic(self) -> Box<dyn Any + Send + 'static> {
+        self.0
+    }
 }
 
 async_std::task_local! {