Drop Python 3.8 support in ast (#13766)

Author: jorenham

stdlib/_ast.pyi

@@ -130,17 +130,6 @@ if sys.version_info >= (3, 10):
         pattern as pattern,
     )
 
-if sys.version_info < (3, 9):
-    from ast import (
-        AugLoad as AugLoad,
-        AugStore as AugStore,
-        ExtSlice as ExtSlice,
-        Index as Index,
-        Param as Param,
-        Suite as Suite,
-        slice as slice,
-    )
-
 PyCF_ALLOW_TOP_LEVEL_AWAIT: Literal[8192]
 PyCF_ONLY_AST: Literal[1024]
 PyCF_TYPE_COMMENTS: Literal[4096]

stdlib/ast.pyi

@@ -1144,8 +1144,7 @@ class Tuple(expr):
         __match_args__ = ("elts", "ctx")
     elts: list[expr]
     ctx: expr_context  # Not present in Python < 3.13 if not passed to `__init__`
-    if sys.version_info >= (3, 9):
-        dims: list[expr]
+    dims: list[expr]
     if sys.version_info >= (3, 13):
         def __init__(self, elts: list[expr] = ..., ctx: expr_context = ..., **kwargs: Unpack[_Attributes]) -> None: ...
     else:
@@ -1155,16 +1154,10 @@ class Tuple(expr):
         def __replace__(self, *, elts: list[expr] = ..., ctx: expr_context = ..., **kwargs: Unpack[_Attributes]) -> Self: ...
 
 @deprecated("Deprecated since Python 3.9.")
-class slice(AST): ...  # deprecated and moved to ast.py for >= (3, 9)
+class slice(AST): ...
 
-if sys.version_info >= (3, 9):
-    _Slice: typing_extensions.TypeAlias = expr
-    _SliceAttributes: typing_extensions.TypeAlias = _Attributes
-else:
-    # alias for use with variables named slice
-    _Slice: typing_extensions.TypeAlias = slice
-
-    class _SliceAttributes(TypedDict): ...
+_Slice: typing_extensions.TypeAlias = expr
+_SliceAttributes: typing_extensions.TypeAlias = _Attributes
 
 class Slice(_Slice):
     if sys.version_info >= (3, 10):
@@ -1187,37 +1180,26 @@ class Slice(_Slice):
         ) -> Self: ...
 
 @deprecated("Deprecated since Python 3.9. Use ast.Tuple instead.")
-class ExtSlice(slice):  # deprecated and moved to ast.py if sys.version_info >= (3, 9)
-    if sys.version_info >= (3, 9):
-        def __new__(cls, dims: Iterable[slice] = (), **kwargs: Unpack[_SliceAttributes]) -> Tuple: ...  # type: ignore[misc]
-    else:
-        dims: list[slice]
-        def __init__(self, dims: list[slice], **kwargs: Unpack[_SliceAttributes]) -> None: ...
+class ExtSlice(slice):
+    def __new__(cls, dims: Iterable[slice] = (), **kwargs: Unpack[_SliceAttributes]) -> Tuple: ...  # type: ignore[misc]
 
 @deprecated("Deprecated since Python 3.9. Use the index value directly instead.")
-class Index(slice):  # deprecated and moved to ast.py if sys.version_info >= (3, 9)
-    if sys.version_info >= (3, 9):
-        def __new__(cls, value: expr, **kwargs: Unpack[_SliceAttributes]) -> expr: ...  # type: ignore[misc]
-    else:
-        value: expr
-        def __init__(self, value: expr, **kwargs: Unpack[_SliceAttributes]) -> None: ...
+class Index(slice):
+    def __new__(cls, value: expr, **kwargs: Unpack[_SliceAttributes]) -> expr: ...  # type: ignore[misc]
 
 class expr_context(AST): ...
 
 @deprecated("Deprecated since Python 3.9. Unused in Python 3.")
-class AugLoad(expr_context): ...  # deprecated and moved to ast.py if sys.version_info >= (3, 9)
+class AugLoad(expr_context): ...
 
 @deprecated("Deprecated since Python 3.9. Unused in Python 3.")
-class AugStore(expr_context): ...  # deprecated and moved to ast.py if sys.version_info >= (3, 9)
+class AugStore(expr_context): ...
 
 @deprecated("Deprecated since Python 3.9. Unused in Python 3.")
-class Param(expr_context): ...  # deprecated and moved to ast.py if sys.version_info >= (3, 9)
+class Param(expr_context): ...
 
 @deprecated("Deprecated since Python 3.9. Unused in Python 3.")
-class Suite(mod):  # deprecated and moved to ast.py if sys.version_info >= (3, 9)
-    if sys.version_info < (3, 9):
-        body: list[stmt]
-        def __init__(self, body: list[stmt]) -> None: ...
+class Suite(mod): ...
 
 class Load(expr_context): ...
 class Store(expr_context): ...
@@ -1702,8 +1684,7 @@ if sys.version_info >= (3, 12):
             ) -> Self: ...
 
 class _ABC(type):
-    if sys.version_info >= (3, 9):
-        def __init__(cls, *args: Unused) -> None: ...
+    def __init__(cls, *args: Unused) -> None: ...
 
 if sys.version_info < (3, 14):
     @deprecated("Replaced by ast.Constant; removed in Python 3.14")
@@ -1894,14 +1875,11 @@ if sys.version_info >= (3, 13):
         show_empty: bool = False,
     ) -> str: ...
 
-elif sys.version_info >= (3, 9):
+else:
     def dump(
         node: AST, annotate_fields: bool = True, include_attributes: bool = False, *, indent: int | str | None = None
     ) -> str: ...
 
-else:
-    def dump(node: AST, annotate_fields: bool = True, include_attributes: bool = False) -> str: ...
-
 def copy_location(new_node: _T, old_node: AST) -> _T: ...
 def fix_missing_locations(node: _T) -> _T: ...
 def increment_lineno(node: _T, n: int = 1) -> _T: ...
@@ -2059,8 +2037,5 @@ class NodeTransformer(NodeVisitor):
     #       The usual return type is AST | None, but Iterable[AST]
     #       is also allowed in some cases -- this needs to be mapped.
 
-if sys.version_info >= (3, 9):
-    def unparse(ast_obj: AST) -> str: ...
-
-if sys.version_info >= (3, 9):
-    def main() -> None: ...
+def unparse(ast_obj: AST) -> str: ...
+def main() -> None: ...