diff options
Diffstat (limited to 'Lib/ast.py')
| -rw-r--r-- | Lib/ast.py | 11 |
1 files changed, 7 insertions, 4 deletions
@@ -62,11 +62,12 @@ def literal_eval(node_or_string): node_or_string = parse(node_or_string, mode='eval') if isinstance(node_or_string, Expression): node_or_string = node_or_string.body + def _raise_malformed_node(node): + raise ValueError(f'malformed node or string: {node!r}') def _convert_num(node): - if isinstance(node, Constant): - if type(node.value) in (int, float, complex): - return node.value - raise ValueError('malformed node or string: ' + repr(node)) + if not isinstance(node, Constant) or type(node.value) not in (int, float, complex): + _raise_malformed_node(node) + return node.value def _convert_signed_num(node): if isinstance(node, UnaryOp) and isinstance(node.op, (UAdd, USub)): operand = _convert_num(node.operand) @@ -88,6 +89,8 @@ def literal_eval(node_or_string): node.func.id == 'set' and node.args == node.keywords == []): return set() elif isinstance(node, Dict): + if len(node.keys) != len(node.values): + _raise_malformed_node(node) return dict(zip(map(_convert, node.keys), map(_convert, node.values))) elif isinstance(node, BinOp) and isinstance(node.op, (Add, Sub)): |