Version 0.6.7

CHANGELOG.md

@@ -2,10 +2,20 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.6.7] 2026-09-07
+### Added
+- `on_error` and `default` arguments to `load_json`, `load_pickle`, `load_jsonl` functions.
+- `posonly_for_required` argument for `parse_args_using_dataclass`.
+
+### Fixed
+- `setup_logging_level` when stderr is not set in root logger.
+
+
 ## [0.6.6] 2026-08-20
 ### Fixed
 - `setup_logging_level` isinstance check.
 
+
 ## [0.6.5] 2026-08-20
 ### Added
 - `return_single_namespace` option for `parse_args_using_dataclass` function.

CITATION.cff

@@ -17,5 +17,5 @@ keywords:
   - tools
   - utilities
 license: MIT
-version: 0.6.6
-date-released: '2026-08-20'
+version: 0.6.7
+date-released: '2026-09-07'

src/pythonwrench/__init__.py

@@ -9,7 +9,7 @@
 __license__ = "MIT"
 __maintainer__ = "Étienne Labbé (Labbeti)"
 __status__ = "Development"
-__version__ = "0.6.6"
+__version__ = "0.6.7"
 
 
 from typing import TYPE_CHECKING

src/pythonwrench/argparse/dataclass_.py

@@ -58,6 +58,7 @@ def parse_args_using_dataclass(
     bool_action: BoolAction = "store",
     add_dashed_arg: bool = True,
     return_single_namespace: Literal[True],
+    posonly_for_required: bool = False,
 ) -> Namespace: ...
 
 
@@ -71,6 +72,7 @@ def parse_args_using_dataclass(
     bool_action: BoolAction = "store",
     add_dashed_arg: bool = True,
     return_single_namespace: Literal[False] = False,
+    posonly_for_required: bool = False,
 ) -> T_DataclassInstance: ...
 
 
@@ -86,6 +88,7 @@ def parse_args_using_dataclass(
     bool_action: BoolAction = "store",
     add_dashed_arg: bool = True,
     return_single_namespace: Literal[False] = False,
+    posonly_for_required: bool = False,
 ) -> Tuple[
     T_DataclassInstance,
     T_DataclassInstance_2,
@@ -105,6 +108,7 @@ def parse_args_using_dataclass(
     bool_action: BoolAction = "store",
     add_dashed_arg: bool = True,
     return_single_namespace: Literal[False] = False,
+    posonly_for_required: bool = False,
 ) -> Tuple[
     T_DataclassInstance,
     T_DataclassInstance_2,
@@ -126,6 +130,7 @@ def parse_args_using_dataclass(
     bool_action: BoolAction = "store",
     add_dashed_arg: bool = True,
     return_single_namespace: Literal[False] = False,
+    posonly_for_required: bool = False,
 ) -> Tuple[
     T_DataclassInstance,
     T_DataclassInstance_2,
@@ -149,6 +154,7 @@ def parse_args_using_dataclass(
     bool_action: BoolAction = "store",
     add_dashed_arg: bool = True,
     return_single_namespace: Literal[False] = False,
+    posonly_for_required: bool = False,
 ) -> Tuple[
     T_DataclassInstance,
     T_DataclassInstance_2,
@@ -167,6 +173,7 @@ def parse_args_using_dataclass(
     bool_action: BoolAction = "store",
     add_dashed_arg: bool = True,
     return_single_namespace: bool = False,
+    posonly_for_required: bool = False,
 ) -> Union[
     DataclassInstance,
     Tuple[DataclassInstance, ...],
@@ -187,6 +194,7 @@ def parse_args_using_dataclass(
             list_parsing=list_parsing,
             bool_action=bool_action,
             add_dashed_arg=add_dashed_arg,
+            posonly_for_required=posonly_for_required,
         )
     assert parser is not None
 
@@ -223,17 +231,23 @@ def add_dataclass_fields_to_parser(
     list_parsing: ListParsing = "argparse",
     bool_action: BoolAction = "store",
     add_dashed_arg: bool = True,
+    posonly_for_required: bool = False,
 ) -> ArgumentParser:
     """Perform the add dataclass fields to parser operation."""
+    if posonly_for_required:
+        prefix = ""
+    else:
+        prefix = "--"
+
     if parser is None:
         parser = ArgumentParser()
 
     for field in fields(dataclass_type):
         kwds = {}
-        posargs = [f"--{field.name}"]
+        posargs = [f"{prefix}{field.name}"]
         if add_dashed_arg and "_" in field.name:
             dashed_arg_name = field.name.replace("_", "-")
-            posargs.append(f"--{dashed_arg_name}")
+            posargs.append(f"{prefix}{dashed_arg_name}")
 
         if field.default is MISSING and field.default_factory is MISSING:
             if bool_action != "store" and field.type is bool:

src/pythonwrench/logging.py

@@ -148,7 +148,7 @@ def setup_logging_level(
 
             try:
                 index = streams.index(handler.stream)
-            except IndexError:
+            except ValueError:
                 continue
 
             handler.setFormatter(fmt)

src/pythonwrench/serialization/_core.py

@@ -5,10 +5,13 @@
 from io import TextIOWrapper
 from pathlib import Path
 from typing import (
+    Literal,
     Union,
     overload,
 )
 
+OnError = Literal["raise", "default"]
+
 
 @overload
 def _setup_output_fpath(

src/pythonwrench/serialization/csv.py

@@ -73,7 +73,9 @@ def dump_csv(
         **csv_writer_kwds,
     )
 
-    if isinstance(file, (str, Path, PathLike)):
+    if not overwrite and isinstance(file, (str, Path, PathLike)):
+        return content
+    elif isinstance(file, (str, Path, PathLike)):
         file = _setup_output_fpath(file, overwrite=overwrite, make_parents=make_parents)
         with open(file, "w") as opened_file:
             opened_file.write(content)
@@ -152,7 +154,9 @@ def save_csv(
         replace_newline_by: Replace newline character to avoid newline in CSV content. defaults to "\\n".
         \*\*csv_writer_kwds: Others optional arguments passed to CSV writer object.
     """
-    if isinstance(file, (str, Path, PathLike)):
+    if not overwrite and isinstance(file, (str, Path, PathLike)):
+        return None
+    elif isinstance(file, (str, Path, PathLike)):
         file = _setup_output_fpath(file, overwrite=overwrite, make_parents=make_parents)
         file = open(file, "w")
         close = True

src/pythonwrench/serialization/json.py

@@ -3,13 +3,14 @@
 
 import json
 from io import StringIO, TextIOBase
+from json import JSONDecodeError
 from os import PathLike
 from pathlib import Path
-from typing import Any, Optional, Union
+from typing import Any, Optional, Union, get_args
 
 from pythonwrench.cast import as_builtin
 from pythonwrench.functools import function_alias
-from pythonwrench.serialization._core import _setup_output_fpath
+from pythonwrench.serialization._core import OnError, _setup_output_fpath
 
 # -- Dump / Save / Serialize content to JSON --
 
@@ -50,7 +51,9 @@ def dump_json(
         **json_dumps_kwds,
     )
 
-    if isinstance(file, (str, Path, PathLike)):
+    if not overwrite and isinstance(file, (str, Path, PathLike)):
+        return content
+    elif isinstance(file, (str, Path, PathLike)):
         file = _setup_output_fpath(file, overwrite=overwrite, make_parents=make_parents)
         with open(file, "w") as opened_file:
             opened_file.write(content)
@@ -146,6 +149,9 @@ def _serialize_json(
 def load_json(
     file: Union[str, Path, PathLike, TextIOBase],
     /,
+    *,
+    on_error: OnError = "raise",
+    default: Any = None,
     **json_loads_kwds,
 ) -> Any:
     """Load json."""
@@ -155,16 +161,33 @@ def load_json(
     else:
         close = False
 
-    data = _parse_json(file, **json_loads_kwds)
+    data = _parse_json(
+        file,
+        on_error=on_error,
+        default=default,
+        **json_loads_kwds,
+    )
     if close:
         file.close()
     return data
 
 
-def loads_json(content: str, /, **json_loads_kwds) -> Any:
-    """Load s json."""
+def loads_json(
+    content: str,
+    /,
+    *,
+    on_error: OnError = "raise",
+    default: Any = None,
+    **json_loads_kwds,
+) -> Any:
+    """Parse JSON string to object."""
     with StringIO(content) as buffer:
-        return _parse_json(buffer, **json_loads_kwds)
+        return _parse_json(
+            buffer,
+            on_error=on_error,
+            default=default,
+            **json_loads_kwds,
+        )
 
 
 @function_alias(load_json)
@@ -173,6 +196,21 @@ def read_json(*args, **kwargs):
     ...
 
 
-def _parse_json(buffer: TextIOBase, **json_loads_kwds) -> Any:
+def _parse_json(
+    buffer: TextIOBase,
+    *,
+    on_error: OnError,
+    default: Any = None,
+    **json_loads_kwds,
+) -> Any:
     """Parse json."""
-    return json.load(buffer, **json_loads_kwds)
+    try:
+        return json.load(buffer, **json_loads_kwds)
+    except JSONDecodeError as err:
+        if on_error == "raise":
+            raise err
+        elif on_error == "default":
+            return default
+        else:
+            msg = f"Invalid argument {on_error=}. (expected one of {get_args(OnError)})"
+            raise ValueError(msg)

src/pythonwrench/serialization/jsonl.py

@@ -4,12 +4,12 @@
 from io import StringIO, TextIOBase
 from os import PathLike
 from pathlib import Path
-from typing import Union
+from typing import Any, Union
 
 from pythonwrench.cast import as_builtin
 from pythonwrench.functools import function_alias
 from pythonwrench.semver import Version
-from pythonwrench.serialization._core import _setup_output_fpath
+from pythonwrench.serialization._core import OnError, _setup_output_fpath
 from pythonwrench.serialization.json import (
     _serialize_json,
     dumps_json,
@@ -63,7 +63,9 @@ def dump_jsonl(
         **json_dumps_kwds,
     )
 
-    if isinstance(file, (str, Path, PathLike)):
+    if not overwrite and isinstance(file, (str, Path, PathLike)):
+        return content
+    elif isinstance(file, (str, Path, PathLike)):
         file = _setup_output_fpath(file, overwrite=overwrite, make_parents=make_parents)
         with open(file, "w") as opened_file:
             opened_file.write(content)
@@ -113,7 +115,9 @@ def save_jsonl(
     **json_dumps_kwds,
 ) -> None:
     """Save jsonl."""
-    if isinstance(file, (str, Path, PathLike)):
+    if not overwrite and isinstance(file, (str, Path, PathLike)):
+        return None
+    elif isinstance(file, (str, Path, PathLike)):
         file = _setup_output_fpath(file, overwrite=overwrite, make_parents=make_parents)
         file = open(file, "w")
         close = True
@@ -163,6 +167,9 @@ def _serialize_jsonl(
 def load_jsonl(
     file: Union[str, Path, PathLike, TextIOBase],
     /,
+    *,
+    on_error: OnError = "raise",
+    default: Any = None,
     **json_loads_kwds,
 ) -> list:
     """Load jsonl."""
@@ -172,16 +179,25 @@ def load_jsonl(
     else:
         close = False
 
-    data = _parse_jsonl(file, **json_loads_kwds)
+    data = _parse_jsonl(file, on_error=on_error, default=default, **json_loads_kwds)
     if close:
         file.close()
     return data
 
 
-def loads_jsonl(content: str, /, **json_loads_kwds) -> list:
+def loads_jsonl(
+    content: str,
+    /,
+    *,
+    on_error: OnError = "raise",
+    default: Any = None,
+    **json_loads_kwds,
+) -> list:
     """Load s jsonl."""
     with StringIO(content) as buffer:
-        return _parse_jsonl(buffer, **json_loads_kwds)
+        return _parse_jsonl(
+            buffer, on_error=on_error, default=default, **json_loads_kwds
+        )
 
 
 @function_alias(load_json)
@@ -190,15 +206,24 @@ def read_jsonl(*args, **kwargs):
     ...
 
 
-def _parse_jsonl(buffer: TextIOBase, **json_loads_kwds) -> list:
+def _parse_jsonl(
+    buffer: TextIOBase,
+    /,
+    *,
+    on_error: OnError = "raise",
+    default: Any = None,
+    **json_loads_kwds,
+) -> list:
     """Parse jsonl."""
     data_lst = []
     while True:
         content = buffer.readline()
         if content == "":
             break
         content = _removesuffix(content, "\n")
-        data = loads_json(content, **json_loads_kwds)
+        data = loads_json(
+            content, on_error=on_error, default=default, **json_loads_kwds
+        )
         data_lst.append(data)
     return data_lst