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-rw-r--r--sphinx/pycode/ast.py6
1 files changed, 3 insertions, 3 deletions
diff --git a/sphinx/pycode/ast.py b/sphinx/pycode/ast.py
index c885db494..9664e7edb 100644
--- a/sphinx/pycode/ast.py
+++ b/sphinx/pycode/ast.py
@@ -58,7 +58,7 @@ def parse(code: str, mode: str = 'exec') -> "ast.AST":
return ast.parse(code, mode=mode)
-def unparse(node: ast.AST) -> str:
+def unparse(node: Optional[ast.AST]) -> Optional[str]:
"""Unparse an AST to string."""
if node is None:
return None
@@ -138,7 +138,7 @@ def _unparse_arg(arg: ast.arg, default: Optional[ast.AST]) -> str:
def unparse_arguments(node: ast.arguments) -> str:
"""Unparse an arguments to string."""
- defaults = list(node.defaults)
+ defaults = list(node.defaults) # type: List[Optional[ast.AST]]
positionals = len(node.args)
posonlyargs = 0
if hasattr(node, "posonlyargs"): # for py38+
@@ -147,7 +147,7 @@ def unparse_arguments(node: ast.arguments) -> str:
for _ in range(len(defaults), positionals):
defaults.insert(0, None)
- kw_defaults = list(node.kw_defaults)
+ kw_defaults = list(node.kw_defaults) # type: List[Optional[ast.AST]]
for _ in range(len(kw_defaults), len(node.kwonlyargs)):
kw_defaults.insert(0, None)