RustPython · moreal · Jan 22, 2026 · Jan 22, 2026 · Jan 22, 2026 · Jan 22, 2026
diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py
@@ -787,7 +787,6 @@ def _test_gen():
 
 class TestOneTrickPonyABCs(ABCTestCase):
 
-    @unittest.expectedFailure # TODO: RUSTPYTHON
     def test_Awaitable(self):
         def gen():
             yield
@@ -840,7 +839,6 @@ class CoroLike: pass
         CoroLike = None
         support.gc_collect() # Kill CoroLike to clean-up ABCMeta cache
 
-    @unittest.expectedFailure # TODO: RUSTPYTHON
     def test_Coroutine(self):
         def gen():
             yield

diff --git a/Lib/test/test_types.py b/Lib/test/test_types.py
@@ -2174,7 +2174,6 @@ def foo():
         foo = types.coroutine(foo)
         self.assertIs(aw, foo())
 
-    @unittest.expectedFailure  # TODO: RUSTPYTHON
     def test_async_def(self):
         # Test that types.coroutine passes 'async def' coroutines
         # without modification
@@ -2431,7 +2430,6 @@ def foo():
         foo = types.coroutine(foo)
         self.assertIs(foo(), gencoro)
 
-    @unittest.expectedFailure  # TODO: RUSTPYTHON
     def test_genfunc(self):
         def gen(): yield
         self.assertIs(types.coroutine(gen), gen)

diff --git a/Lib/types.py b/Lib/types.py
@@ -2,65 +2,78 @@
 Define names for built-in types that aren't directly accessible as a builtin.
 """
 
-import sys
-
 # Iterators in Python aren't a matter of type but of protocol.  A large
 # and changing number of builtin types implement *some* flavor of
 # iterator.  Don't check the type!  Use hasattr to check for both
 # "__iter__" and "__next__" attributes instead.
 
-def _f(): pass
-FunctionType = type(_f)
-LambdaType = type(lambda: None)         # Same as FunctionType
-CodeType = type(_f.__code__)
-MappingProxyType = type(type.__dict__)
-SimpleNamespace = type(sys.implementation)
-
-def _cell_factory():
-    a = 1
-    def f():
-        nonlocal a
-    return f.__closure__[0]
-CellType = type(_cell_factory())
-
-def _g():
-    yield 1
-GeneratorType = type(_g())
-
-async def _c(): pass
-_c = _c()
-CoroutineType = type(_c)
-_c.close()  # Prevent ResourceWarning
-
-async def _ag():
-    yield
-_ag = _ag()
-AsyncGeneratorType = type(_ag)
-
-class _C:
-    def _m(self): pass
-MethodType = type(_C()._m)
+try:
+    from _types import *
+except ImportError:
+    import sys
+
+    def _f(): pass
+    FunctionType = type(_f)
+    LambdaType = type(lambda: None)  # Same as FunctionType
+    CodeType = type(_f.__code__)
+    MappingProxyType = type(type.__dict__)
+    SimpleNamespace = type(sys.implementation)
+
+    def _cell_factory():
+        a = 1
+        def f():
+            nonlocal a
+        return f.__closure__[0]
+    CellType = type(_cell_factory())
+
+    def _g():
+        yield 1
+    GeneratorType = type(_g())
+
+    async def _c(): pass
+    _c = _c()
+    CoroutineType = type(_c)
+    _c.close()  # Prevent ResourceWarning
+
+    async def _ag():
+        yield
+    _ag = _ag()
+    AsyncGeneratorType = type(_ag)
+
+    class _C:
+        def _m(self): pass
+    MethodType = type(_C()._m)
+
+    BuiltinFunctionType = type(len)
+    BuiltinMethodType = type([].append)  # Same as BuiltinFunctionType
+
+    WrapperDescriptorType = type(object.__init__)
+    MethodWrapperType = type(object().__str__)
+    MethodDescriptorType = type(str.join)
+    ClassMethodDescriptorType = type(dict.__dict__['fromkeys'])
+
+    ModuleType = type(sys)
 
-BuiltinFunctionType = type(len)
-BuiltinMethodType = type([].append)     # Same as BuiltinFunctionType
+    try:
+        raise TypeError
+    except TypeError as exc:
+        TracebackType = type(exc.__traceback__)
+        FrameType = type(exc.__traceback__.tb_frame)
 
-WrapperDescriptorType = type(object.__init__)
-MethodWrapperType = type(object().__str__)
-MethodDescriptorType = type(str.join)
-ClassMethodDescriptorType = type(dict.__dict__['fromkeys'])
+    GetSetDescriptorType = type(FunctionType.__code__)
+    MemberDescriptorType = type(FunctionType.__globals__)
 
-ModuleType = type(sys)
+    GenericAlias = type(list[int])
+    UnionType = type(int | str)
 
-try:
-    raise TypeError
-except TypeError as exc:
-    TracebackType = type(exc.__traceback__)
-    FrameType = type(exc.__traceback__.tb_frame)
+    EllipsisType = type(Ellipsis)
+    NoneType = type(None)
+    NotImplementedType = type(NotImplemented)
 
-GetSetDescriptorType = type(FunctionType.__code__)
-MemberDescriptorType = type(FunctionType.__globals__)
+    # CapsuleType cannot be accessed from pure Python,
+    # so there is no fallback definition.
 
-del sys, _f, _g, _C, _c, _ag, _cell_factory  # Not for export
+    del sys, _f, _g, _C, _c, _ag, _cell_factory  # Not for export
 
 
 # Provide a PEP 3115 compliant mechanism for class creation
@@ -279,8 +292,7 @@ def coroutine(func):
     if not callable(func):
         raise TypeError('types.coroutine() expects a callable')
 
-    # XXX RUSTPYTHON TODO: iterable coroutine
-    if (False and func.__class__ is FunctionType and
+    if (func.__class__ is FunctionType and
         getattr(func, '__code__', None).__class__ is CodeType):
 
         co_flags = func.__code__.co_flags
@@ -325,18 +337,4 @@ def wrapped(*args, **kwargs):
 
     return wrapped
 
-GenericAlias = type(list[int])
-UnionType = type(int | str)
-
-EllipsisType = type(Ellipsis)
-NoneType = type(None)
-NotImplementedType = type(NotImplemented)
-
-def __getattr__(name):
-    if name == 'CapsuleType':
-        import _socket
-        return type(_socket.CAPI)
-    raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
-
-__all__ = [n for n in globals() if n[:1] != '_']
-__all__ += ['CapsuleType']
+__all__ = [n for n in globals() if not n.startswith('_')]  # for pydoc
diff --git a/crates/compiler-core/src/bytecode.rs b/crates/compiler-core/src/bytecode.rs
@@ -297,6 +297,7 @@ bitflags! {
         const VARKEYWORDS = 0x0008;
         const GENERATOR = 0x0020;
         const COROUTINE = 0x0080;
+        const ITERABLE_COROUTINE = 0x0100;
         /// If a code object represents a function and has a docstring,
         /// this bit is set and the first item in co_consts is the docstring.
         const HAS_DOCSTRING = 0x4000000;

diff --git a/crates/vm/src/builtins/asyncgenerator.rs b/crates/vm/src/builtins/asyncgenerator.rs
@@ -1,4 +1,4 @@
-use super::{PyCode, PyGenericAlias, PyStrRef, PyType, PyTypeRef};
+use super::{PyCode, PyGenerator, PyGenericAlias, PyStrRef, PyType, PyTypeRef};
 use crate::{
     AsObject, Context, Py, PyObjectRef, PyPayload, PyRef, PyResult, VirtualMachine,
     builtins::PyBaseExceptionRef,
@@ -592,6 +592,28 @@ impl PyAnextAwaitable {
         let awaitable = if wrapped.class().is(vm.ctx.types.coroutine_type) {
             // Coroutine - get __await__ later
             wrapped.clone()
+        } else if let Some(generator) = wrapped.downcast_ref::<PyGenerator>() {
+            // Generator with CO_ITERABLE_COROUTINE flag can be awaited
+            // (e.g., generators decorated with @types.coroutine)
+            if generator
+                .as_coro()
+                .frame()
+                .code
+                .flags
+                .contains(crate::bytecode::CodeFlags::ITERABLE_COROUTINE)
+            {
+                // Return the generator itself as the iterator
+                return Ok(wrapped.clone());
+            }
+            // Fall through: try to get __await__ method for generator subclasses
+            if let Some(await_method) = vm.get_method(wrapped.clone(), identifier!(vm, __await__)) {
+                await_method?.call((), vm)?
+            } else {
+                return Err(vm.new_type_error(format!(
+                    "object {} can't be used in 'await' expression",
+                    wrapped.class().name()
+                )));
+            }
         } else {
             // Try to get __await__ method
             if let Some(await_method) = vm.get_method(wrapped.clone(), identifier!(vm, __await__)) {

diff --git a/crates/vm/src/frame.rs b/crates/vm/src/frame.rs
@@ -1013,6 +1013,23 @@ impl ExecutingFrame<'_> {
                         );
                     }
                     awaited_obj
+                } else if let Some(generator) = awaited_obj.downcast_ref::<PyGenerator>() {
+                    // Generator with CO_ITERABLE_COROUTINE flag can be awaited
+                    // (e.g., generators decorated with @types.coroutine)
+                    if generator
+                        .as_coro()
+                        .frame()
+                        .code
+                        .flags
+                        .contains(bytecode::CodeFlags::ITERABLE_COROUTINE)
+                    {
+                        awaited_obj
+                    } else {
+                        return Err(vm.new_type_error(format!(
+                            "object {} can't be used in 'await' expression",
+                            awaited_obj.class().name(),
+                        )));
+                    }
                 } else {
                     let await_method = vm.get_method_or_type_error(
                         awaited_obj.clone(),
@@ -1051,7 +1068,9 @@ impl ExecutingFrame<'_> {
                 let iterable = self.pop_value();
                 let iter = if iterable.class().is(vm.ctx.types.coroutine_type) {
                     // Coroutine requires CO_COROUTINE or CO_ITERABLE_COROUTINE flag
-                    if !self.code.flags.intersects(bytecode::CodeFlags::COROUTINE) {
+                    if !self.code.flags.intersects(
+                        bytecode::CodeFlags::COROUTINE | bytecode::CodeFlags::ITERABLE_COROUTINE,
+                    ) {
                         return Err(vm.new_type_error(
                             "cannot 'yield from' a coroutine object in a non-coroutine generator"
                                 .to_owned(),