fix: Python 3.8 AST compatibility and ruff formatting

sean2077 · sean2077 · commit 04199c5d7283 · 2026-03-17T14:14:53.000+08:00
- Add deprecated AST node types (Index, Num, Str, Bytes, NameConstant)
  to the safe eval allowlist for Python 3.8 compatibility
- Fix ruff format in test_issues.py
diff --git a/jsonpath/jsonpath.py b/jsonpath/jsonpath.py
@@ -165,6 +165,8 @@ class JSONPath:
             # Context
             ast.Load,
         }
+        # Python 3.8 compatibility: deprecated AST nodes removed in 3.12
+        | {getattr(ast, n) for n in ("Index", "Num", "Str", "Bytes", "NameConstant") if hasattr(ast, n)}
     )
     _ALLOWED_NAMES = frozenset({"__obj", "len", "RegexPattern"})
     _ALLOWED_CALLS = frozenset({"len", "RegexPattern"})
diff --git a/tests/test_issues.py b/tests/test_issues.py
@@ -93,9 +93,7 @@ def test_bare_at_numeric_comparison(self):
     def test_bare_at_regex(self):
         """Bare @ should work with regex matching."""
         data = {"tags": ["web", "owasp:software_and_data_integrity_failures"]}
-        assert JSONPath("$.tags[?(@ =~ /owasp:.+/)]").parse(data) == [
-            "owasp:software_and_data_integrity_failures"
-        ]
+        assert JSONPath("$.tags[?(@ =~ /owasp:.+/)]").parse(data) == ["owasp:software_and_data_integrity_failures"]
 
     def test_bare_at_in_operator(self):
         """Bare @ with 'in' operator."""

Original file line number	Diff line number	Diff line change
`@@ -165,6 +165,8 @@ class JSONPath:`
`165`	`165`	`# Context`
`166`	`166`	`ast.Load,`
`167`	`167`	`}`
	`168`	`+ # Python 3.8 compatibility: deprecated AST nodes removed in 3.12`
	`169`	`+ \| {getattr(ast, n) for n in ("Index", "Num", "Str", "Bytes", "NameConstant") if hasattr(ast, n)}`
`168`	`170`	`)`
`169`	`171`	`_ALLOWED_NAMES = frozenset({"__obj", "len", "RegexPattern"})`
`170`	`172`	`_ALLOWED_CALLS = frozenset({"len", "RegexPattern"})`