Release 3.10.1: Fixed type checking support (#62)

* moved typing marker into package

* explicit exception (non-)chaining

* version bump

Author: maxfischer2781

asyncstdlib/__init__.py

@@ -35,7 +35,7 @@
 )
 from .asynctools import borrow, scoped_iter, await_each, apply, sync
 
-__version__ = "3.10.0"
+__version__ = "3.10.1"
 
 __all__ = [
     "anext",

asyncstdlib/builtins.py

@@ -262,15 +262,15 @@ async def _zip_inner_strict(aiters):
             plural = " " if tried == 1 else "s 1-"
             raise ValueError(
                 f"zip() argument {tried+1} is shorter than argument{plural}{tried}"
-            )
+            ) from None
         # after the first iterable was empty, some later iterable may be not
         sentinel = object()
         for tried, _aiter in _sync_builtins.enumerate(aiters):
             if await anext(_aiter, sentinel) is not sentinel:
                 plural = " " if tried == 1 else "s 1-"
                 raise ValueError(
                     f"zip() argument {tried+1} is longer than argument{plural}{tried}"
-                )
+                ) from None
         return
 
 

asyncstdlib/functools.py

@@ -146,7 +146,9 @@ async def reduce(
                 initial if initial is not __REDUCE_SENTINEL else await anext(item_iter)
             )
         except StopAsyncIteration:
-            raise TypeError("reduce() of empty sequence with no initial value")
+            raise TypeError(
+                "reduce() of empty sequence with no initial value"
+            ) from None
         function = _awaitify(function)
         async for head in item_iter:
             value = await function(value, head)

asyncstdlib/itertools.py

@@ -100,7 +100,9 @@ async def accumulate(iterable, function, *, initial):
                 else await anext(item_iter)
             )
         except StopAsyncIteration:
-            raise TypeError("accumulate() of empty sequence with no initial value")
+            raise TypeError(
+                "accumulate() of empty sequence with no initial value"
+            ) from None
         function = _awaitify(function)
         yield value
         async for head in item_iter:

py.typed renamed to asyncstdlib/py.typed

@@ -82,7 +82,7 @@ async def replace():
         try:
             yield
         except StopAsyncIteration:
-            raise StopAsyncIteration("inside")
+            raise StopAsyncIteration("inside") from None
 
     with pytest.raises(RuntimeError):
         async with replace():
@@ -104,7 +104,7 @@ async def replace():
         try:
             yield
         except RuntimeError:
-            raise RuntimeError("inside")
+            raise RuntimeError("inside") from None
 
     with pytest.raises(RuntimeError, match="inside"):
         async with replace():
@@ -129,7 +129,7 @@ async def recreate():
         try:
             yield
         except BaseException as err:
-            raise type(err)("inside")
+            raise type(err)("inside") from None
 
     with pytest.raises(KeyError, match="inside"):
         async with recreate():