Support Module and other objects in ast.parse (#14837)

Author: GastonAQS

stdlib/@tests/test_cases/check_ast.py

@@ -0,0 +1,44 @@
+import ast
+from typing_extensions import assert_type
+
+# Test with source code strings
+assert_type(ast.parse("x = 1"), ast.Module)
+assert_type(ast.parse("x = 1", mode="exec"), ast.Module)
+assert_type(ast.parse("1 + 1", mode="eval"), ast.Expression)
+assert_type(ast.parse("x = 1", mode="single"), ast.Interactive)
+assert_type(ast.parse("(int, str) -> None", mode="func_type"), ast.FunctionType)
+
+# Test with mod objects - Module
+mod1: ast.Module = ast.Module([], [])
+assert_type(ast.parse(mod1), ast.Module)
+assert_type(ast.parse(mod1, mode="exec"), ast.Module)
+mod2: ast.Module = ast.Module(body=[ast.Expr(value=ast.Constant(value=42))], type_ignores=[])
+assert_type(ast.parse(mod2), ast.Module)
+
+# Test with mod objects - Expression
+expr1: ast.Expression = ast.Expression(body=ast.Constant(value=42))
+assert_type(ast.parse(expr1, mode="eval"), ast.Expression)
+
+# Test with mod objects - Interactive
+inter1: ast.Interactive = ast.Interactive(body=[])
+assert_type(ast.parse(inter1, mode="single"), ast.Interactive)
+
+# Test with mod objects - FunctionType
+func1: ast.FunctionType = ast.FunctionType(argtypes=[], returns=ast.Constant(value=None))
+assert_type(ast.parse(func1, mode="func_type"), ast.FunctionType)
+
+# Test that any AST node can be passed and returns the same type
+binop: ast.BinOp = ast.BinOp(left=ast.Constant(1), op=ast.Add(), right=ast.Constant(2))
+assert_type(ast.parse(binop), ast.BinOp)
+
+constant: ast.Constant = ast.Constant(value=42)
+assert_type(ast.parse(constant), ast.Constant)
+
+expr_stmt: ast.Expr = ast.Expr(value=ast.Constant(value=42))
+assert_type(ast.parse(expr_stmt), ast.Expr)
+
+# Test with additional parameters
+assert_type(ast.parse(mod1, filename="test.py"), ast.Module)
+assert_type(ast.parse(mod1, type_comments=True), ast.Module)
+assert_type(ast.parse(mod1, feature_version=(3, 10)), ast.Module)
+assert_type(ast.parse(binop, filename="test.py"), ast.BinOp)

stdlib/ast.pyi

@@ -1744,6 +1744,16 @@ if sys.version_info < (3, 14):
 _T = _TypeVar("_T", bound=AST)
 
 if sys.version_info >= (3, 13):
+    @overload
+    def parse(
+        source: _T,
+        filename: str | ReadableBuffer | os.PathLike[Any] = "<unknown>",
+        mode: Literal["exec", "eval", "func_type", "single"] = "exec",
+        *,
+        type_comments: bool = False,
+        feature_version: None | int | tuple[int, int] = None,
+        optimize: Literal[-1, 0, 1, 2] = -1,
+    ) -> _T: ...
     @overload
     def parse(
         source: str | ReadableBuffer,
@@ -1823,6 +1833,15 @@ if sys.version_info >= (3, 13):
     ) -> mod: ...
 
 else:
+    @overload
+    def parse(
+        source: _T,
+        filename: str | ReadableBuffer | os.PathLike[Any] = "<unknown>",
+        mode: Literal["exec", "eval", "func_type", "single"] = "exec",
+        *,
+        type_comments: bool = False,
+        feature_version: None | int | tuple[int, int] = None,
+    ) -> _T: ...
     @overload
     def parse(
         source: str | ReadableBuffer,