Another pass at CI issues

Author: A5rocks

src/trio/_core/_tests/test_asyncgen.py

@@ -221,13 +221,15 @@ async def async_main() -> None:
         saved.append(agen())
         await saved[-1].asend(None)
 
+    ATTEMPT_AMOUNT = 50
+
     # Actually running into the edge case requires that the run_sync_soon task
     # execute in between the system nursery's closure and the strong-ification
     # of runner.asyncgens. There's about a 25% chance that it doesn't
     # (if the run_sync_soon task runs before init on one tick and after init
     # on the next tick); if we try enough times, we can make the chance of
     # failure as small as we want.
-    for attempt in range(50):
+    for _ in range(ATTEMPT_AMOUNT):
         needs_retry = False
         record.clear()
         saved.clear()
@@ -240,7 +242,7 @@ async def async_main() -> None:
     else:  # pragma: no cover
         pytest.fail(
             "Didn't manage to hit the trailing_finalizer_asyncgens case "
-            f"despite trying {attempt} times",
+            f"despite trying {ATTEMPT_AMOUNT} times",
         )
 
 

src/trio/_tests/test_exports.py

@@ -175,6 +175,10 @@ def no_underscores(symbols: Iterable[str]) -> set[str]:
         completions = script.complete()
         static_names = no_underscores(c.name for c in completions)
     elif tool == "mypy":
+        if sys.implementation.name != "cpython":
+            # https://github.com/python/mypy/issues/20329
+            pytest.skip("mypy does not support pypy")
+
         if not RUN_SLOW:  # pragma: no cover
             pytest.skip("use --run-slow to check against mypy")
 
@@ -271,6 +275,10 @@ def no_hidden(symbols: Iterable[str]) -> set[str]:
 
     if tool == "jedi" and sys.implementation.name != "cpython":
         pytest.skip("jedi does not support pypy")
+    
+    if tool == "mypy" and sys.implementation.name != "cpython":
+        # https://github.com/python/mypy/issues/20329
+        pytest.skip("mypy does not support pypy")
 
     if tool == "mypy":
         cache = Path.cwd() / ".mypy_cache"