refactor: Simplify AST imports, stop using deprecated code from ast

Issue #179: #179

src/griffe/agents/nodes/_all.py

@@ -2,16 +2,7 @@
 
 from __future__ import annotations
 
-from ast import AST
-from ast import Assign as NodeAssign
-from ast import AugAssign as NodeAugAssign
-from ast import BinOp as NodeBinOp
-from ast import Constant as NodeConstant
-from ast import List as NodeList
-from ast import Name as NodeName
-from ast import Set as NodeSet
-from ast import Starred as NodeStarred
-from ast import Tuple as NodeTuple
+import ast
 from contextlib import suppress
 from functools import partial
 from typing import TYPE_CHECKING, Any, Callable
@@ -27,47 +18,47 @@
 logger = get_logger(__name__)
 
 
-def _extract_constant(node: NodeConstant, parent: Module) -> list[str | Name]:
+def _extract_constant(node: ast.Constant, parent: Module) -> list[str | Name]:
     return [node.value]
 
 
-def _extract_name(node: NodeName, parent: Module) -> list[str | Name]:
+def _extract_name(node: ast.Name, parent: Module) -> list[str | Name]:
     return [Name(node.id, partial(parent.resolve, node.id))]
 
 
-def _extract_starred(node: NodeStarred, parent: Module) -> list[str | Name]:
+def _extract_starred(node: ast.Starred, parent: Module) -> list[str | Name]:
     return _extract(node.value, parent)
 
 
-def _extract_sequence(node: NodeList | NodeSet | NodeTuple, parent: Module) -> list[str | Name]:
+def _extract_sequence(node: ast.List | ast.Set | ast.Tuple, parent: Module) -> list[str | Name]:
     sequence = []
     for elt in node.elts:
         sequence.extend(_extract(elt, parent))
     return sequence
 
 
-def _extract_binop(node: NodeBinOp, parent: Module) -> list[str | Name]:
+def _extract_binop(node: ast.BinOp, parent: Module) -> list[str | Name]:
     left = _extract(node.left, parent)
     right = _extract(node.right, parent)
     return left + right
 
 
 _node_map: dict[type, Callable[[Any, Module], list[str | Name]]] = {
-    NodeConstant: _extract_constant,
-    NodeName: _extract_name,
-    NodeStarred: _extract_starred,
-    NodeList: _extract_sequence,
-    NodeSet: _extract_sequence,
-    NodeTuple: _extract_sequence,
-    NodeBinOp: _extract_binop,
+    ast.Constant: _extract_constant,
+    ast.Name: _extract_name,
+    ast.Starred: _extract_starred,
+    ast.List: _extract_sequence,
+    ast.Set: _extract_sequence,
+    ast.Tuple: _extract_sequence,
+    ast.BinOp: _extract_binop,
 }
 
 
-def _extract(node: AST, parent: Module) -> list[str | Name]:
+def _extract(node: ast.AST, parent: Module) -> list[str | Name]:
     return _node_map[type(node)](node, parent)
 
 
-def get__all__(node: NodeAssign | NodeAugAssign, parent: Module) -> list[str | Name]:
+def get__all__(node: ast.Assign | ast.AugAssign, parent: Module) -> list[str | Name]:
     """Get the values declared in `__all__`.
 
     Parameters:
@@ -83,7 +74,7 @@ def get__all__(node: NodeAssign | NodeAugAssign, parent: Module) -> list[str | N
 
 
 def safe_get__all__(
-    node: NodeAssign | NodeAugAssign,
+    node: ast.Assign | ast.AugAssign,
     parent: Module,
     log_level: LogLevel = LogLevel.debug,  # TODO: set to error when we handle more things
 ) -> list[str | Name]:

src/griffe/agents/nodes/_docstrings.py

@@ -2,18 +2,15 @@
 
 from __future__ import annotations
 
-from ast import AST
-from ast import Constant as NodeConstant
-from ast import Expr as NodeExpr
-from ast import Str as NodeStr
+import ast
 
 from griffe.logger import get_logger
 
 logger = get_logger(__name__)
 
 
 def get_docstring(
-    node: AST,
+    node: ast.AST,
     *,
     strict: bool = False,
 ) -> tuple[str | None, int | None, int | None]:
@@ -27,17 +24,14 @@ def get_docstring(
         A tuple with the value and line numbers of the docstring.
     """
     # TODO: possible optimization using a type map
-    if isinstance(node, NodeExpr):
+    if isinstance(node, ast.Expr):
         doc = node.value
-    elif node.body and isinstance(node.body[0], NodeExpr) and not strict:  # type: ignore[attr-defined]
+    elif node.body and isinstance(node.body[0], ast.Expr) and not strict:  # type: ignore[attr-defined]
         doc = node.body[0].value  # type: ignore[attr-defined]
     else:
         return None, None, None
-    if isinstance(doc, NodeConstant) and isinstance(doc.value, str):
+    if isinstance(doc, ast.Constant) and isinstance(doc.value, str):
         return doc.value, doc.lineno, doc.end_lineno
-    if isinstance(doc, NodeStr):
-        lineno = doc.lineno
-        return doc.s, lineno, doc.end_lineno
     return None, None, None