Fix default_env=True conflicting with default_config_files

CHANGELOG.rst

@@ -28,6 +28,8 @@ Fixed
   <https://github.com/omni-us/jsonargparse/pull/814>`__).
 - Getting parameter descriptions from docstrings not working for dataclass
   inheritance (`#815 <https://github.com/omni-us/jsonargparse/pull/815>`__).
+- ``default_env=True`` conflicting with ``default_config_files`` (`#818
+  <https://github.com/omni-us/jsonargparse/pull/818>`__).
 
 Changed
 ^^^^^^^

jsonargparse/_actions.py

@@ -629,21 +629,9 @@ def add_prefix(key):
 
 
 single_subcommand: ContextVar = ContextVar("single_subcommand", default=True)
-parent_parsers: ContextVar = ContextVar("parent_parsers", default=[])
 parse_kwargs: ContextVar = ContextVar("parse_kwargs", default={})
 
 
-@contextmanager
-def parent_parsers_context(key, parser):
-    prev = parent_parsers.get()
-    curr = [] if parser is None else prev + [(key, parser)]
-    token = parent_parsers.set(curr)
-    try:
-        yield
-    finally:
-        parent_parsers.reset(token)
-
-
 class _ActionSubCommands(_SubParsersAction):
     """Extension of argparse._SubParsersAction to modify subcommands functionality."""
 
@@ -814,11 +802,10 @@ def handle_subcommands(
             # Merge environment variable values and default values
             subnamespace = None
             key = prefix + subcommand
-            with parent_parsers_context(key, parser):
-                if env:
-                    subnamespace = subparser.parse_env(defaults=defaults, _skip_validation=True)
-                elif defaults:
-                    subnamespace = subparser.get_defaults(skip_validation=True)
+            if env:
+                subnamespace = subparser.parse_env(defaults=defaults, _skip_validation=True)
+            elif defaults:
+                subnamespace = subparser.get_defaults(skip_validation=True)
 
             # Update all subcommand settings
             if subnamespace is not None:

jsonargparse/_core.py

@@ -28,7 +28,6 @@
     _is_action_value_list,
     _is_branch_key,
     filter_non_parsing_actions,
-    parent_parsers,
     previous_config,
 )
 from ._common import (
@@ -673,7 +672,6 @@ def _load_config_parser_mode(
         cfg_path: Union[str, os.PathLike] = "",
         ext_vars: Optional[dict] = None,
         prev_cfg: Optional[Namespace] = None,
-        key: Optional[str] = None,
     ) -> Namespace:
         """Loads a configuration string into a namespace.
 
@@ -689,8 +687,6 @@ def _load_config_parser_mode(
             cfg_dict = load_value(cfg_str, path=cfg_path, ext_vars=ext_vars)
         except get_loader_exceptions() as ex:
             raise TypeError(f"Problems parsing config: {ex}") from ex
-        if key and isinstance(cfg_dict, dict):
-            cfg_dict = cfg_dict.get(key, {})
         if not isinstance(cfg_dict, dict):
             raise TypeError(f"Unexpected config: {cfg_str}")
         return self._apply_actions(cfg_dict, prev_cfg=prev_cfg)
@@ -949,24 +945,18 @@ def save_paths(cfg):
 
     ## Methods related to defaults ##
 
-    def _get_default_config_files(self) -> list[tuple[Optional[str], Path]]:
+    def _get_default_config_files(self) -> list[Path]:
         if getattr(self, "_inner_parser", False):
             return []
 
         default_config_files = []
 
-        for key, parser in parent_parsers.get():
-            for pattern in parser.default_config_files:
-                files = sorted(glob.glob(os.path.expanduser(pattern)))
-                default_config_files += [(key, v) for v in files]
-
         for pattern in self.default_config_files:
-            files = sorted(glob.glob(os.path.expanduser(pattern)))
-            default_config_files += [(None, x) for x in files]
+            default_config_files += sorted(glob.glob(os.path.expanduser(pattern)))
 
         if len(default_config_files) > 0:
             with suppress(TypeError):
-                return [(k, Path(v, mode=_get_config_read_mode())) for k, v in default_config_files]
+                return [Path(v, mode=_get_config_read_mode()) for v in default_config_files]
         return []
 
     def get_default(self, dest: str) -> Any:
@@ -1017,12 +1007,12 @@ def get_defaults(self, skip_validation: bool = False, **kwargs) -> Namespace:
         self._logger.debug("Loaded parser defaults: %s", cfg)
 
         default_config_files = self._get_default_config_files()
-        for key, default_config_file in default_config_files:
+        for default_config_file in default_config_files:
             default_config_file_content = default_config_file.get_content()
             if not default_config_file_content.strip():
                 continue
             with change_to_path_dir(default_config_file), parser_context(parent_parser=self):
-                cfg_file = self._load_config_parser_mode(default_config_file_content, key=key, prev_cfg=cfg)
+                cfg_file = self._load_config_parser_mode(default_config_file_content, prev_cfg=cfg)
                 cfg = self.merge_config(cfg_file, cfg)
                 try:
                     with _ActionPrintConfig.skip_print_config():

jsonargparse/_typehints.py

@@ -45,7 +45,6 @@
     _find_action,
     _find_parent_action,
     _is_action_value_list,
-    parent_parsers_context,
     parse_kwargs,
     remove_actions,
 )
@@ -473,7 +472,7 @@ def skip_sub_defaults_apply(v):
                 or (isinstance(v, dict) and any(is_subclass_spec(e) for e in v.values()))
             )
 
-        with ActionTypeHint.sub_defaults_context(), parent_parsers_context(None, None):
+        with ActionTypeHint.sub_defaults_context():
             parser._apply_actions(cfg, skip_fn=skip_sub_defaults_apply, prev_cfg=cfg.clone())
 
     @staticmethod

jsonargparse_tests/conftest.py

@@ -135,6 +135,11 @@ def subparser() -> ArgumentParser:
     return ArgumentParser(exit_on_error=False)
 
 
+@pytest.fixture
+def subsubparser() -> ArgumentParser:
+    return ArgumentParser(exit_on_error=False)
+
+
 @pytest.fixture
 def example_parser() -> ArgumentParser:
     parser = ArgumentParser(prog="app", exit_on_error=False)

jsonargparse_tests/test_actions.py

@@ -335,8 +335,7 @@ def test_action_parser_conflict_subparser_key(parser, subparser):
     pytest.raises(ValueError, lambda: parser.add_argument("--inner", action=ActionParser(subparser)))
 
 
-def test_action_parser_nested_dash_names(parser, subparser):
-    subsubparser = ArgumentParser()
+def test_action_parser_nested_dash_names(parser, subparser, subsubparser):
     subsubparser.add_argument("--op1-like")
     subparser.add_argument("--op2-like", action=ActionParser(parser=subsubparser))
     assert "a" == subparser.parse_args(["--op2-like.op1-like=a"]).op2_like.op1_like

jsonargparse_tests/test_subcommands.py

@@ -402,10 +402,9 @@ def test_subcommands_custom_instantiator(parser, subparser, subtests):
         assert init.cmd.cls.call == "subparser"
 
 
-def test_subsubcommand_default_env_true(parser, subparser):
+def test_subsubcommand_default_env_true(parser, subparser, subsubparser):
     parser.default_env = True
     parser.env_prefix = "APP"
-    subsubparser = ArgumentParser()
     subsubparser.add_argument("--v", type=int, default=1)
     subcommands1 = parser.add_subcommands()
     subcommands1.add_subcommand("s1", subparser)
@@ -417,3 +416,23 @@ def test_subsubcommand_default_env_true(parser, subparser):
     with patch.dict(os.environ, {"APP_SUBCOMMAND": "s1", "APP_S1__SUBCOMMAND": "s2"}):
         cfg = parser.parse_args([])
     assert cfg == Namespace(subcommand="s1", s1=Namespace(subcommand="s2", s2=Namespace(v=1)))
+
+
+@pytest.mark.parametrize("default_env", [True, False])
+def test_subsubcommand_default_config_files(parser, subparser, subsubparser, default_env, tmp_cwd):
+    config = {"val0": 123, "cmd1": {"val1": 456, "cmd2": {"val2": 789}}}
+    Path("config.json").write_text(json.dumps(config))
+    parser.default_env = default_env
+    parser.default_config_files = ["config.json"]
+    parser.add_argument("--val0")
+    subparser.add_argument("--val1")
+    subsubparser.add_argument("--val2")
+    subcommands = parser.add_subcommands()
+    subcommands.add_subcommand("cmd1", subparser)
+    subsubcommands = subparser.add_subcommands()
+    subsubcommands.add_subcommand("cmd2", subsubparser)
+
+    cfg = parser.parse_args([])
+    assert cfg.clone(with_meta=False) == Namespace(
+        val0=123, subcommand="cmd1", cmd1=Namespace(val1=456, subcommand="cmd2", cmd2=Namespace(val2=789))
+    )