Use Python::get_type() instead of PyTypeInfo::type_object()

The former needs one less import and uses a familiar object.

src/err/err_state.rs

@@ -2,7 +2,7 @@ use crate::{
     exceptions::{PyBaseException, PyTypeError},
     ffi,
     types::{PyTraceback, PyType},
-    AsPyPointer, IntoPy, IntoPyPointer, Py, PyObject, PyTypeInfo, Python,
+    AsPyPointer, IntoPy, IntoPyPointer, Py, PyObject, Python,
 };
 
 #[derive(Clone)]
@@ -89,7 +89,7 @@ impl PyErrState {
     #[inline]
     pub(crate) fn exceptions_must_derive_from_base_exception(py: Python<'_>) -> Self {
         PyErrState::LazyValue {
-            ptype: PyTypeError::type_object(py).into(),
+            ptype: py.get_type::<PyTypeError>().into(),
             pvalue: boxed_args("exceptions must derive from BaseException"),
         }
     }

src/err/mod.rs

@@ -484,16 +484,14 @@ impl PyErr {
     ///
     /// The `category` should be one of the `Warning` classes available in
     /// [`pyo3::exceptions`](crate::exceptions), or a subclass.  The Python
-    /// object can be retrieved using [`PyTypeInfo::type_object()`].
+    /// object can be retrieved using [`Python::get_type()`].
     ///
     /// Example:
     /// ```rust
-    /// use pyo3::prelude::*;
-    /// use pyo3::PyTypeInfo;
-    ///
+    /// # use pyo3::prelude::*;
     /// # fn main() -> PyResult<()> {
     /// Python::with_gil(|py| {
-    ///     let user_warning = pyo3::exceptions::PyUserWarning::type_object(py);
+    ///     let user_warning = py.get_type::<pyo3::exceptions::PyUserWarning>();
     ///     PyErr::warn(py, user_warning, "I am warning you", 0)?;
     ///     Ok(())
     /// })
@@ -833,7 +831,7 @@ fn exceptions_must_derive_from_base_exception(py: Python<'_>) -> PyErr {
 mod tests {
     use super::PyErrState;
     use crate::exceptions;
-    use crate::{AsPyPointer, PyErr, PyTypeInfo, Python};
+    use crate::{AsPyPointer, PyErr, Python};
 
     #[test]
     fn no_error() {
@@ -1009,7 +1007,7 @@ mod tests {
         // GIL locked should prevent effects to be visible to other testing
         // threads.
         Python::with_gil(|py| {
-            let cls = exceptions::PyUserWarning::type_object(py);
+            let cls = py.get_type::<exceptions::PyUserWarning>();
 
             // Reset warning filter to default state
             let warnings = py.import("warnings").unwrap();

src/impl_/extract_argument.rs

@@ -3,7 +3,7 @@ use crate::{
     ffi,
     pyclass::boolean_struct::False,
     types::{PyDict, PyString, PyTuple},
-    FromPyObject, PyAny, PyClass, PyErr, PyRef, PyRefMut, PyResult, PyTypeInfo, Python,
+    FromPyObject, PyAny, PyClass, PyErr, PyRef, PyRefMut, PyResult, Python,
 };
 
 /// A trait which is used to help PyO3 macros extract function arguments.
@@ -167,7 +167,7 @@ pub fn from_py_with_with_default<'py, T>(
 #[doc(hidden)]
 #[cold]
 pub fn argument_extraction_error(py: Python<'_>, arg_name: &str, error: PyErr) -> PyErr {
-    if error.get_type(py).is(PyTypeError::type_object(py)) {
+    if error.get_type(py).is(py.get_type::<PyTypeError>()) {
         let remapped_error =
             PyTypeError::new_err(format!("argument '{}': {}", arg_name, error.value(py)));
         remapped_error.set_cause(py, error.cause(py));

src/marker.rs

@@ -596,6 +596,7 @@ impl<'py> Python<'py> {
     }
 
     /// Gets the Python type object for type `T`.
+    #[inline]
     pub fn get_type<T>(self) -> &'py PyType
     where
         T: PyTypeInfo,

src/types/any.rs

@@ -913,7 +913,6 @@ impl PyAny {
 #[cfg(test)]
 mod tests {
     use crate::{
-        type_object::PyTypeInfo,
         types::{IntoPyDict, PyList, PyLong, PyModule},
         Python, ToPyObject,
     };
@@ -1014,7 +1013,7 @@ class SimpleClass:
     fn test_any_isinstance() {
         Python::with_gil(|py| {
             let l = vec![1u8, 2].to_object(py).into_ref(py);
-            assert!(l.is_instance(PyList::type_object(py)).unwrap());
+            assert!(l.is_instance(py.get_type::<PyList>()).unwrap());
         });
     }
 

src/types/dict.rs

@@ -421,7 +421,7 @@ mod tests {
     #[cfg(not(PyPy))]
     use crate::exceptions;
     #[cfg(not(PyPy))]
-    use crate::{types::PyList, PyTypeInfo};
+    use crate::types::PyList;
     use crate::{types::PyTuple, Python, ToPyObject};
     use std::collections::{BTreeMap, HashMap};
 
@@ -886,7 +886,7 @@ mod tests {
         Python::with_gil(|py| {
             let dict = abc_dict(py);
             let keys = dict.call_method0("keys").unwrap();
-            assert!(keys.is_instance(PyDictKeys::type_object(py)).unwrap());
+            assert!(keys.is_instance(py.get_type::<PyDictKeys>()).unwrap());
         })
     }
 
@@ -896,7 +896,7 @@ mod tests {
         Python::with_gil(|py| {
             let dict = abc_dict(py);
             let values = dict.call_method0("values").unwrap();
-            assert!(values.is_instance(PyDictValues::type_object(py)).unwrap());
+            assert!(values.is_instance(py.get_type::<PyDictValues>()).unwrap());
         })
     }
 
@@ -906,7 +906,7 @@ mod tests {
         Python::with_gil(|py| {
             let dict = abc_dict(py);
             let items = dict.call_method0("items").unwrap();
-            assert!(items.is_instance(PyDictItems::type_object(py)).unwrap());
+            assert!(items.is_instance(py.get_type::<PyDictItems>()).unwrap());
         })
     }
 }

src/types/pysuper.rs

@@ -1,5 +1,4 @@
 use crate::ffi;
-use crate::type_object::PyTypeInfo;
 use crate::types::PyType;
 use crate::{PyAny, PyResult};
 
@@ -54,7 +53,7 @@ impl PySuper {
     /// ```
     pub fn new<'py>(ty: &'py PyType, obj: &'py PyAny) -> PyResult<&'py PySuper> {
         let py = ty.py();
-        let super_ = PySuper::type_object(py).call1((ty, obj))?;
+        let super_ = py.get_type::<PySuper>().call1((ty, obj))?;
         let super_ = super_.downcast::<PySuper>()?;
         Ok(super_)
     }

src/types/string.rs

@@ -282,8 +282,6 @@ impl PyString {
 #[cfg(test)]
 mod tests {
     use super::*;
-    #[cfg(all(not(Py_LIMITED_API), target_endian = "little"))]
-    use crate::PyTypeInfo;
     use crate::Python;
     use crate::{PyObject, ToPyObject};
     #[cfg(all(not(Py_LIMITED_API), target_endian = "little"))]
@@ -379,7 +377,7 @@ mod tests {
             let data = unsafe { s.data().unwrap() };
             assert_eq!(data, PyStringData::Ucs1(b"f\xfe"));
             let err = data.to_string(py).unwrap_err();
-            assert!(err.get_type(py).is(PyUnicodeDecodeError::type_object(py)));
+            assert!(err.get_type(py).is(py.get_type::<PyUnicodeDecodeError>()));
             assert!(err
                 .to_string()
                 .contains("'utf-8' codec can't decode byte 0xfe in position 1"));
@@ -421,7 +419,7 @@ mod tests {
             let data = unsafe { s.data().unwrap() };
             assert_eq!(data, PyStringData::Ucs2(&[0xff22, 0xd800]));
             let err = data.to_string(py).unwrap_err();
-            assert!(err.get_type(py).is(PyUnicodeDecodeError::type_object(py)));
+            assert!(err.get_type(py).is(py.get_type::<PyUnicodeDecodeError>()));
             assert!(err
                 .to_string()
                 .contains("'utf-16' codec can't decode bytes in position 0-3"));
@@ -460,7 +458,7 @@ mod tests {
             let data = unsafe { s.data().unwrap() };
             assert_eq!(data, PyStringData::Ucs4(&[0x20000, 0xd800]));
             let err = data.to_string(py).unwrap_err();
-            assert!(err.get_type(py).is(PyUnicodeDecodeError::type_object(py)));
+            assert!(err.get_type(py).is(py.get_type::<PyUnicodeDecodeError>()));
             assert!(err
                 .to_string()
                 .contains("'utf-32' codec can't decode bytes in position 0-7"));

src/types/typeobject.rs

@@ -75,16 +75,14 @@ impl PyType {
 
 #[cfg(test)]
 mod tests {
-    use crate::{
-        types::{PyBool, PyLong},
-        PyTypeInfo, Python,
-    };
+    use crate::types::{PyBool, PyLong};
+    use crate::Python;
 
     #[test]
     fn test_type_is_subclass() {
         Python::with_gil(|py| {
-            let bool_type = PyBool::type_object(py);
-            let long_type = PyLong::type_object(py);
+            let bool_type = py.get_type::<PyBool>();
+            let long_type = py.get_type::<PyLong>();
             assert!(bool_type.is_subclass(long_type).unwrap());
         });
     }
@@ -92,7 +90,7 @@ mod tests {
     #[test]
     fn test_type_is_subclass_of() {
         Python::with_gil(|py| {
-            assert!(PyBool::type_object(py).is_subclass_of::<PyLong>().unwrap());
+            assert!(py.get_type::<PyBool>().is_subclass_of::<PyLong>().unwrap());
         });
     }
 

tests/test_gc.rs

@@ -3,7 +3,6 @@
 use pyo3::class::PyTraverseError;
 use pyo3::class::PyVisit;
 use pyo3::prelude::*;
-use pyo3::PyTypeInfo;
 use pyo3::{py_run, AsPyPointer, PyCell, PyTryInto};
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::Arc;
@@ -228,7 +227,7 @@ fn gc_during_borrow() {
             }
 
             // get the traverse function
-            let ty = TraversableClass::type_object(py).as_type_ptr();
+            let ty = py.get_type::<TraversableClass>().as_type_ptr();
             let traverse = get_type_traverse(ty).unwrap();
 
             // create an object and check that traversing it works normally
@@ -284,7 +283,7 @@ fn traverse_error() {
         }
 
         // get the traverse function
-        let ty = PanickyTraverse::type_object(py).as_type_ptr();
+        let ty = py.get_type::<PanickyTraverse>().as_type_ptr();
         let traverse = get_type_traverse(ty).unwrap();
 
         // confirm that traversing errors

tests/test_inheritance.rs

@@ -1,7 +1,7 @@
 #![cfg(feature = "macros")]
 
 use pyo3::prelude::*;
-use pyo3::{py_run, PyTypeInfo};
+use pyo3::py_run;
 
 use pyo3::types::IntoPyDict;
 
@@ -107,8 +107,8 @@ fn mutation_fails() {
 #[test]
 fn is_subclass_and_is_instance() {
     Python::with_gil(|py| {
-        let sub_ty = SubClass::type_object(py);
-        let base_ty = BaseClass::type_object(py);
+        let sub_ty = py.get_type::<SubClass>();
+        let base_ty = py.get_type::<BaseClass>();
         assert!(sub_ty.is_subclass_of::<BaseClass>().unwrap());
         assert!(sub_ty.is_subclass(base_ty).unwrap());
 
@@ -308,10 +308,9 @@ impl SimpleClass {
 #[test]
 fn test_subclass_ref_counts() {
     // regression test for issue #1363
-    use pyo3::PyTypeInfo;
     Python::with_gil(|py| {
         #[allow(non_snake_case)]
-        let SimpleClass = SimpleClass::type_object(py);
+        let SimpleClass = py.get_type::<SimpleClass>();
         py_run!(
             py,
             SimpleClass,

tests/test_multiple_pymethods.rs

@@ -2,7 +2,6 @@
 
 use pyo3::prelude::*;
 use pyo3::types::PyType;
-use pyo3::PyTypeInfo;
 
 #[macro_use]
 mod common;
@@ -65,7 +64,7 @@ impl PyClassWithMultiplePyMethods {
 #[test]
 fn test_class_with_multiple_pymethods() {
     Python::with_gil(|py| {
-        let cls = PyClassWithMultiplePyMethods::type_object(py);
+        let cls = py.get_type::<PyClassWithMultiplePyMethods>();
         py_assert!(py, cls, "cls()() == 'call'");
         py_assert!(py, cls, "cls().method() == 'method'");
         py_assert!(py, cls, "cls.classmethod() == 'classmethod'");