hotfix syntax error < python3.12

examples/action_factory_demo.py

@@ -6,7 +6,7 @@ from falyx.action import ActionFactoryAction, ChainedAction, HTTPAction, Selecti
 # Selection of a post ID to fetch (just an example set)
 post_selector = SelectionAction(
     name="Pick Post ID",
-    selections=["1", "2", "3", "4", "5"],
+    selections=["15", "25", "35", "45", "55"],
     title="Choose a Post ID to submit",
     prompt_message="Post ID > ",
     show_table=True,
@@ -14,7 +14,7 @@ post_selector = SelectionAction(
 
 
 # Factory that builds and executes the actual HTTP POST request
-def build_post_action(post_id) -> HTTPAction:
+async def build_post_action(post_id) -> HTTPAction:
     print(f"Building HTTPAction for Post ID: {post_id}")
     return HTTPAction(
         name=f"POST to /posts (id={post_id})",

examples/menu_demo.py

@@ -2,8 +2,16 @@ import asyncio
 import time
 
 from falyx import Falyx
-from falyx.action import Action, ActionGroup, ChainedAction, MenuAction, ProcessAction
+from falyx.action import (
+    Action,
+    ActionGroup,
+    ChainedAction,
+    MenuAction,
+    ProcessAction,
+    PromptMenuAction,
+)
 from falyx.menu import MenuOption, MenuOptionMap
+from falyx.themes import OneColors
 
 
 # Basic coroutine for Action
@@ -77,20 +85,28 @@ parallel = ActionGroup(
 
 process = ProcessAction(name="compute", action=heavy_computation)
 
+menu_options = MenuOptionMap(
+    {
+        "A": MenuOption("Run basic Action", basic_action, style=OneColors.LIGHT_YELLOW),
+        "C": MenuOption("Run ChainedAction", chained, style=OneColors.MAGENTA),
+        "P": MenuOption("Run ActionGroup (parallel)", parallel, style=OneColors.CYAN),
+        "H": MenuOption("Run ProcessAction (heavy task)", process, style=OneColors.GREEN),
+    }
+)
+
 
 # Menu setup
 
 menu = MenuAction(
     name="main-menu",
     title="Choose a task to run",
-    menu_options=MenuOptionMap(
-        {
-            "1": MenuOption("Run basic Action", basic_action),
-            "2": MenuOption("Run ChainedAction", chained),
-            "3": MenuOption("Run ActionGroup (parallel)", parallel),
-            "4": MenuOption("Run ProcessAction (heavy task)", process),
-        }
-    ),
+    menu_options=menu_options,
+)
+
+
+prompt_menu = PromptMenuAction(
+    name="select-user",
+    menu_options=menu_options,
 )
 
 flx = Falyx(
@@ -108,6 +124,13 @@ flx.add_command(
     logging_hooks=True,
 )
 
+flx.add_command(
+    key="P",
+    description="Show Prompt Menu",
+    action=prompt_menu,
+    logging_hooks=True,
+)
+
 
 if __name__ == "__main__":
     asyncio.run(flx.run())

examples/selection_demo.py

@@ -2,6 +2,7 @@ import asyncio
 
 from falyx.action import SelectionAction
 from falyx.selection import SelectionOption
+from falyx.signals import CancelSignal
 
 selections = {
     "1": SelectionOption(
@@ -23,4 +24,7 @@ select = SelectionAction(
     show_table=True,
 )
 
-print(asyncio.run(select()))
+try:
+    print(asyncio.run(select()))
+except CancelSignal:
+    print("Selection was cancelled.")

falyx/action/__init__.py

@@ -18,6 +18,7 @@ from .action_factory import ActionFactoryAction
 from .http_action import HTTPAction
 from .io_action import BaseIOAction, ShellAction
 from .menu_action import MenuAction
+from .prompt_menu_action import PromptMenuAction
 from .select_file_action import SelectFileAction
 from .selection_action import SelectionAction
 from .signal_action import SignalAction
@@ -40,4 +41,5 @@ __all__ = [
     "FallbackAction",
     "LiteralInputAction",
     "UserInputAction",
+    "PromptMenuAction",
 ]

falyx/action/action.py

@@ -726,7 +726,7 @@ class ActionGroup(BaseAction, ActionListMixin):
             if context.extra["errors"]:
                 context.exception = Exception(
                     f"{len(context.extra['errors'])} action(s) failed: "
-                    f"{' ,'.join(name for name, _ in context.extra["errors"])}"
+                    f"{' ,'.join(name for name, _ in context.extra['errors'])}"
                 )
                 await self.hooks.trigger(HookType.ON_ERROR, context)
                 raise context.exception

falyx/action/prompt_menu_action.py

@@ -0,0 +1,134 @@
+# Falyx CLI Framework — (c) 2025 rtj.dev LLC — MIT Licensed
+"""prompt_menu_action.py"""
+from typing import Any
+
+from prompt_toolkit import PromptSession
+from prompt_toolkit.formatted_text import FormattedText, merge_formatted_text
+from rich.console import Console
+from rich.tree import Tree
+
+from falyx.action.action import BaseAction
+from falyx.context import ExecutionContext
+from falyx.execution_registry import ExecutionRegistry as er
+from falyx.hook_manager import HookType
+from falyx.logger import logger
+from falyx.menu import MenuOptionMap
+from falyx.signals import BackSignal, QuitSignal
+from falyx.themes import OneColors
+
+
+class PromptMenuAction(BaseAction):
+    """PromptMenuAction class for creating prompt -> actions."""
+
+    def __init__(
+        self,
+        name: str,
+        menu_options: MenuOptionMap,
+        *,
+        prompt_message: str = "Select > ",
+        default_selection: str = "",
+        inject_last_result: bool = False,
+        inject_into: str = "last_result",
+        console: Console | None = None,
+        prompt_session: PromptSession | None = None,
+        never_prompt: bool = False,
+        include_reserved: bool = True,
+    ):
+        super().__init__(
+            name,
+            inject_last_result=inject_last_result,
+            inject_into=inject_into,
+            never_prompt=never_prompt,
+        )
+        self.menu_options = menu_options
+        self.prompt_message = prompt_message
+        self.default_selection = default_selection
+        self.console = console or Console(color_system="auto")
+        self.prompt_session = prompt_session or PromptSession()
+        self.include_reserved = include_reserved
+
+    def get_infer_target(self) -> tuple[None, None]:
+        return None, None
+
+    async def _run(self, *args, **kwargs) -> Any:
+        kwargs = self._maybe_inject_last_result(kwargs)
+        context = ExecutionContext(
+            name=self.name,
+            args=args,
+            kwargs=kwargs,
+            action=self,
+        )
+
+        effective_default = self.default_selection
+        maybe_result = str(self.last_result)
+        if maybe_result in self.menu_options:
+            effective_default = maybe_result
+        elif self.inject_last_result:
+            logger.warning(
+                "[%s] Injected last result '%s' not found in menu options",
+                self.name,
+                maybe_result,
+            )
+
+        if self.never_prompt and not effective_default:
+            raise ValueError(
+                f"[{self.name}] 'never_prompt' is True but no valid default_selection"
+                " was provided."
+            )
+
+        context.start_timer()
+        try:
+            await self.hooks.trigger(HookType.BEFORE, context)
+            key = effective_default
+            if not self.never_prompt:
+                placeholder_formatted_text = []
+                for index, (key, option) in enumerate(self.menu_options.items()):
+                    placeholder_formatted_text.append(option.render_prompt(key))
+                    if index < len(self.menu_options) - 1:
+                        placeholder_formatted_text.append(
+                            FormattedText([(OneColors.WHITE, " | ")])
+                        )
+                placeholder = merge_formatted_text(placeholder_formatted_text)
+                key = await self.prompt_session.prompt_async(
+                    message=self.prompt_message, placeholder=placeholder
+                )
+            option = self.menu_options[key]
+            result = await option.action(*args, **kwargs)
+            context.result = result
+            await self.hooks.trigger(HookType.ON_SUCCESS, context)
+            return result
+
+        except BackSignal:
+            logger.debug("[%s][BackSignal] ← Returning to previous menu", self.name)
+            return None
+        except QuitSignal:
+            logger.debug("[%s][QuitSignal] ← Exiting application", self.name)
+            raise
+        except Exception as error:
+            context.exception = error
+            await self.hooks.trigger(HookType.ON_ERROR, context)
+            raise
+        finally:
+            context.stop_timer()
+            await self.hooks.trigger(HookType.AFTER, context)
+            await self.hooks.trigger(HookType.ON_TEARDOWN, context)
+            er.record(context)
+
+    async def preview(self, parent: Tree | None = None):
+        label = f"[{OneColors.LIGHT_YELLOW_b}]📋 PromptMenuAction[/] '{self.name}'"
+        tree = parent.add(label) if parent else Tree(label)
+        for key, option in self.menu_options.items():
+            tree.add(
+                f"[dim]{key}[/]: {option.description} → [italic]{option.action.name}[/]"
+            )
+            await option.action.preview(parent=tree)
+        if not parent:
+            self.console.print(tree)
+
+    def __str__(self) -> str:
+        return (
+            f"PromptMenuAction(name={self.name!r}, options={list(self.menu_options.keys())!r}, "
+            f"default_selection={self.default_selection!r}, "
+            f"include_reserved={self.include_reserved}, "
+            f"prompt={'off' if self.never_prompt else 'on'})"
+        )

falyx/action/selection_action.py

@@ -1,5 +1,6 @@
 # Falyx CLI Framework — (c) 2025 rtj.dev LLC — MIT Licensed
 """selection_action.py"""
+from copy import copy
 from typing import Any
 
 from prompt_toolkit import PromptSession
@@ -72,6 +73,7 @@ class SelectionAction(BaseAction):
         self.default_selection = default_selection
         self.prompt_message = prompt_message
         self.show_table = show_table
+        self.cancel_key = self._find_cancel_key()
 
     def _coerce_return_type(
         self, return_type: SelectionReturnType | str
@@ -115,12 +117,40 @@ class SelectionAction(BaseAction):
             )
 
     def _find_cancel_key(self) -> str:
-        """Return first numeric value not already used in the selection dict."""
-        for index in range(len(self.selections)):
+        """Find the cancel key in the selections."""
+        if isinstance(self.selections, dict):
+            for index in range(len(self.selections) + 1):
                 if str(index) not in self.selections:
                     return str(index)
         return str(len(self.selections))
 
+    @property
+    def cancel_key(self) -> str:
+        return self._cancel_key
+
+    @cancel_key.setter
+    def cancel_key(self, value: str) -> None:
+        """Set the cancel key for the selection."""
+        if not isinstance(value, str):
+            raise TypeError("Cancel key must be a string.")
+        if isinstance(self.selections, dict) and value in self.selections:
+            raise ValueError(
+                "Cancel key cannot be one of the selection keys. "
+                f"Current selections: {self.selections}"
+            )
+        if isinstance(self.selections, list):
+            if not value.isdigit() or int(value) > len(self.selections):
+                raise ValueError(
+                    "cancel_key must be a digit and not greater than the number of selections."
+                )
+        self._cancel_key = value
+
+    def cancel_formatter(self, index: int, selection: str) -> str:
+        """Format the cancel option for display."""
+        if self.cancel_key == str(index):
+            return f"[{index}] [{OneColors.DARK_RED}]Cancel[/]"
+        return f"[{index}] {selection}"
+
     def get_infer_target(self) -> tuple[None, None]:
         return None, None
 
@@ -164,16 +194,17 @@ class SelectionAction(BaseAction):
 
         context.start_timer()
         try:
-            cancel_key = self._find_cancel_key()
+            self.cancel_key = self._find_cancel_key()
             await self.hooks.trigger(HookType.BEFORE, context)
             if isinstance(self.selections, list):
                 table = render_selection_indexed_table(
                     title=self.title,
                     selections=self.selections + ["Cancel"],
                     columns=self.columns,
+                    formatter=self.cancel_formatter,
                 )
                 if not self.never_prompt:
-                    index = await prompt_for_index(
+                    index: int | str = await prompt_for_index(
                         len(self.selections),
                         table,
                         default_selection=effective_default,
@@ -184,12 +215,12 @@ class SelectionAction(BaseAction):
                     )
                 else:
                     index = effective_default
-                if index == cancel_key:
+                if int(index) == int(self.cancel_key):
                     raise CancelSignal("User cancelled the selection.")
                 result: Any = self.selections[int(index)]
             elif isinstance(self.selections, dict):
                 cancel_option = {
-                    cancel_key: SelectionOption(
+                    self.cancel_key: SelectionOption(
                         description="Cancel", value=CancelSignal, style=OneColors.DARK_RED
                     )
                 }
@@ -210,7 +241,7 @@ class SelectionAction(BaseAction):
                     )
                 else:
                     key = effective_default
-                if key == cancel_key:
+                if key == self.cancel_key:
                     raise CancelSignal("User cancelled the selection.")
                 if self.return_type == SelectionReturnType.KEY:
                     result = key

falyx/command.py

@@ -139,7 +139,7 @@ class Command(BaseModel):
 
     model_config = ConfigDict(arbitrary_types_allowed=True)
 
-    def parse_args(
+    async def parse_args(
         self, raw_args: list[str] | str, from_validate: bool = False
     ) -> tuple[tuple, dict]:
         if callable(self.custom_parser):
@@ -165,7 +165,9 @@ class Command(BaseModel):
                     raw_args,
                 )
                 return ((), {})
-        return self.arg_parser.parse_args_split(raw_args, from_validate=from_validate)
+        return await self.arg_parser.parse_args_split(
+            raw_args, from_validate=from_validate
+        )
 
     @field_validator("action", mode="before")
     @classmethod

falyx/falyx.py

@@ -83,8 +83,11 @@ class CommandValidator(Validator):
         self.error_message = error_message
 
     def validate(self, document) -> None:
+        pass
+
+    async def validate_async(self, document) -> None:
         text = document.text
-        is_preview, choice, _, __ = self.falyx.get_command(text, from_validate=True)
+        is_preview, choice, _, __ = await self.falyx.get_command(text, from_validate=True)
         if is_preview:
             return None
         if not choice:
@@ -188,7 +191,7 @@ class Falyx:
         self.cli_args: Namespace | None = cli_args
         self.render_menu: Callable[[Falyx], None] | None = render_menu
         self.custom_table: Callable[[Falyx], Table] | Table | None = custom_table
-        self.hide_menu_table: bool = hide_menu_table
+        self._hide_menu_table: bool = hide_menu_table
         self.validate_options(cli_args, options)
         self._prompt_session: PromptSession | None = None
         self.mode = FalyxMode.MENU
@@ -740,7 +743,7 @@ class Falyx:
             return True, input_str[1:].strip()
         return False, input_str.strip()
 
-    def get_command(
+    async def get_command(
         self, raw_choices: str, from_validate=False
     ) -> tuple[bool, Command | None, tuple, dict[str, Any]]:
         """
@@ -773,7 +776,9 @@ class Falyx:
             if is_preview:
                 return True, name_map[choice], args, kwargs
             try:
-                args, kwargs = name_map[choice].parse_args(input_args, from_validate)
+                args, kwargs = await name_map[choice].parse_args(
+                    input_args, from_validate
+                )
             except CommandArgumentError as error:
                 if not from_validate:
                     if not name_map[choice].show_help():
@@ -834,7 +839,7 @@ class Falyx:
         """Processes the action of the selected command."""
         with patch_stdout(raw=True):
             choice = await self.prompt_session.prompt_async()
-        is_preview, selected_command, args, kwargs = self.get_command(choice)
+        is_preview, selected_command, args, kwargs = await self.get_command(choice)
         if not selected_command:
             logger.info("Invalid command '%s'.", choice)
             return True
@@ -876,7 +881,7 @@ class Falyx:
     ) -> Any:
         """Run a command by key without displaying the menu (non-interactive mode)."""
         self.debug_hooks()
-        is_preview, selected_command, _, __ = self.get_command(command_key)
+        is_preview, selected_command, _, __ = await self.get_command(command_key)
         kwargs = kwargs or {}
 
         self.last_run_command = selected_command
@@ -975,7 +980,7 @@ class Falyx:
             self.print_message(self.welcome_message)
         try:
             while True:
-                if not self.hide_menu_table:
+                if not self.options.get("hide_menu_table", self._hide_menu_table):
                     if callable(self.render_menu):
                         self.render_menu(self)
                     else:
@@ -1012,6 +1017,9 @@ class Falyx:
         if not self.options.get("force_confirm"):
             self.options.set("force_confirm", self._force_confirm)
 
+        if not self.options.get("hide_menu_table"):
+            self.options.set("hide_menu_table", self._hide_menu_table)
+
         if self.cli_args.verbose:
             logging.getLogger("falyx").setLevel(logging.DEBUG)
 
@@ -1029,7 +1037,7 @@ class Falyx:
 
         if self.cli_args.command == "preview":
             self.mode = FalyxMode.PREVIEW
-            _, command, args, kwargs = self.get_command(self.cli_args.name)
+            _, command, args, kwargs = await self.get_command(self.cli_args.name)
             if not command:
                 self.console.print(
                     f"[{OneColors.DARK_RED}]❌ Command '{self.cli_args.name}' not found."
@@ -1043,7 +1051,7 @@ class Falyx:
 
         if self.cli_args.command == "run":
             self.mode = FalyxMode.RUN
-            is_preview, command, _, __ = self.get_command(self.cli_args.name)
+            is_preview, command, _, __ = await self.get_command(self.cli_args.name)
             if is_preview:
                 if command is None:
                     sys.exit(1)
@@ -1054,7 +1062,7 @@ class Falyx:
                 sys.exit(1)
             self._set_retry_policy(command)
             try:
-                args, kwargs = command.parse_args(self.cli_args.command_args)
+                args, kwargs = await command.parse_args(self.cli_args.command_args)
             except HelpSignal:
                 sys.exit(0)
             try:

falyx/menu.py

@@ -2,6 +2,8 @@ from __future__ import annotations
 
 from dataclasses import dataclass
 
+from prompt_toolkit.formatted_text import FormattedText
+
 from falyx.action import BaseAction
 from falyx.signals import BackSignal, QuitSignal
 from falyx.themes import OneColors
@@ -26,6 +28,12 @@ class MenuOption:
         """Render the menu option for display."""
         return f"[{OneColors.WHITE}][{key}][/] [{self.style}]{self.description}[/]"
 
+    def render_prompt(self, key: str) -> FormattedText:
+        """Render the menu option for prompt display."""
+        return FormattedText(
+            [(OneColors.WHITE, f"[{key}] "), (self.style, self.description)]
+        )
+
 
 class MenuOptionMap(CaseInsensitiveDict):
     """

falyx/parsers/argparse.py

@@ -39,7 +39,7 @@ class ArgumentAction(Enum):
 class Argument:
     """Represents a command-line argument."""
 
-    flags: list[str]
+    flags: tuple[str, ...]
     dest: str  # Destination name for the argument
     action: ArgumentAction = (
         ArgumentAction.STORE
@@ -49,7 +49,7 @@ class Argument:
     choices: list[str] | None = None  # List of valid choices for the argument
     required: bool = False  # True if the argument is required
     help: str = ""  # Help text for the argument
-    nargs: int | str = 1  # int, '?', '*', '+'
+    nargs: int | str | None = None  # int, '?', '*', '+', None
     positional: bool = False  # True if no leading - or -- in flags
 
     def get_positional_text(self) -> str:
@@ -151,6 +151,7 @@ class CommandArgumentParser:
         aliases: list[str] | None = None,
     ) -> None:
         """Initialize the CommandArgumentParser."""
+        self.console = Console(color_system="auto")
         self.command_key: str = command_key
         self.command_description: str = command_description
         self.command_style: str = command_style
@@ -163,7 +164,6 @@ class CommandArgumentParser:
         self._flag_map: dict[str, Argument] = {}
         self._dest_set: set[str] = set()
         self._add_help()
-        self.console = Console(color_system="auto")
 
     def _add_help(self):
         """Add help argument to the parser."""
@@ -185,9 +185,7 @@ class CommandArgumentParser:
             raise CommandArgumentError("Positional arguments cannot have multiple flags")
         return positional
 
-    def _get_dest_from_flags(
-        self, flags: tuple[str, ...], dest: str | None
-    ) -> str | None:
+    def _get_dest_from_flags(self, flags: tuple[str, ...], dest: str | None) -> str:
         """Convert flags to a destination name."""
         if dest:
             if not dest.replace("_", "").isalnum():
@@ -216,7 +214,7 @@ class CommandArgumentParser:
         return dest
 
     def _determine_required(
-        self, required: bool, positional: bool, nargs: int | str
+        self, required: bool, positional: bool, nargs: int | str | None
     ) -> bool:
         """Determine if the argument is required."""
         if required:
@@ -234,7 +232,22 @@ class CommandArgumentParser:
 
         return required
 
-    def _validate_nargs(self, nargs: int | str) -> int | str:
+    def _validate_nargs(
+        self, nargs: int | str | None, action: ArgumentAction
+    ) -> int | str | None:
+        if action in (
+            ArgumentAction.STORE_FALSE,
+            ArgumentAction.STORE_TRUE,
+            ArgumentAction.COUNT,
+            ArgumentAction.HELP,
+        ):
+            if nargs is not None:
+                raise CommandArgumentError(
+                    f"nargs cannot be specified for {action} actions"
+                )
+            return None
+        if nargs is None:
+            nargs = 1
         allowed_nargs = ("?", "*", "+")
         if isinstance(nargs, int):
             if nargs <= 0:
@@ -246,7 +259,9 @@ class CommandArgumentParser:
             raise CommandArgumentError(f"nargs must be an int or one of {allowed_nargs}")
         return nargs
 
-    def _normalize_choices(self, choices: Iterable, expected_type: Any) -> list[Any]:
+    def _normalize_choices(
+        self, choices: Iterable | None, expected_type: Any
+    ) -> list[Any]:
         if choices is not None:
             if isinstance(choices, dict):
                 raise CommandArgumentError("choices cannot be a dict")
@@ -293,8 +308,34 @@ class CommandArgumentParser:
                             f"Default list value {default!r} for '{dest}' cannot be coerced to {expected_type.__name__}"
                         )
 
+    def _validate_action(
+        self, action: ArgumentAction | str, positional: bool
+    ) -> ArgumentAction:
+        if not isinstance(action, ArgumentAction):
+            try:
+                action = ArgumentAction(action)
+            except ValueError:
+                raise CommandArgumentError(
+                    f"Invalid action '{action}' is not a valid ArgumentAction"
+                )
+        if action in (
+            ArgumentAction.STORE_TRUE,
+            ArgumentAction.STORE_FALSE,
+            ArgumentAction.COUNT,
+            ArgumentAction.HELP,
+        ):
+            if positional:
+                raise CommandArgumentError(
+                    f"Action '{action}' cannot be used with positional arguments"
+                )
+
+        return action
+
     def _resolve_default(
-        self, action: ArgumentAction, default: Any, nargs: str | int
+        self,
+        default: Any,
+        action: ArgumentAction,
+        nargs: str | int | None,
     ) -> Any:
         """Get the default value for the argument."""
         if default is None:
@@ -328,7 +369,18 @@ class CommandArgumentParser:
                     f"Flag '{flag}' must be a single character or start with '--'"
                 )
 
-    def add_argument(self, *flags, **kwargs):
+    def add_argument(
+        self,
+        *flags,
+        action: str | ArgumentAction = "store",
+        nargs: int | str | None = None,
+        default: Any = None,
+        type: Any = str,
+        choices: Iterable | None = None,
+        required: bool = False,
+        help: str = "",
+        dest: str | None = None,
+    ) -> None:
         """Add an argument to the parser.
         Args:
             name or flags: Either a name or prefixed flags (e.g. 'faylx', '-f', '--falyx').
@@ -341,9 +393,10 @@ class CommandArgumentParser:
             help: A brief description of the argument.
             dest: The name of the attribute to be added to the object returned by parse_args().
         """
+        expected_type = type
         self._validate_flags(flags)
         positional = self._is_positional(flags)
-        dest = self._get_dest_from_flags(flags, kwargs.get("dest"))
+        dest = self._get_dest_from_flags(flags, dest)
         if dest in self._dest_set:
             raise CommandArgumentError(
                 f"Destination '{dest}' is already defined.\n"
@@ -351,18 +404,9 @@ class CommandArgumentParser:
                 "is not supported. Define a unique 'dest' for each argument."
             )
         self._dest_set.add(dest)
-        action = kwargs.get("action", ArgumentAction.STORE)
-        if not isinstance(action, ArgumentAction):
-            try:
-                action = ArgumentAction(action)
-            except ValueError:
-                raise CommandArgumentError(
-                    f"Invalid action '{action}' is not a valid ArgumentAction"
-                )
-        flags = list(flags)
-        nargs = self._validate_nargs(kwargs.get("nargs", 1))
-        default = self._resolve_default(action, kwargs.get("default"), nargs)
-        expected_type = kwargs.get("type", str)
+        action = self._validate_action(action, positional)
+        nargs = self._validate_nargs(nargs, action)
+        default = self._resolve_default(default, action, nargs)
         if (
             action in (ArgumentAction.STORE, ArgumentAction.APPEND, ArgumentAction.EXTEND)
             and default is not None
@@ -371,14 +415,12 @@ class CommandArgumentParser:
                 self._validate_default_list_type(default, expected_type, dest)
             else:
                 self._validate_default_type(default, expected_type, dest)
-        choices = self._normalize_choices(kwargs.get("choices"), expected_type)
+        choices = self._normalize_choices(choices, expected_type)
         if default is not None and choices and default not in choices:
             raise CommandArgumentError(
                 f"Default value '{default}' not in allowed choices: {choices}"
             )
-        required = self._determine_required(
-            kwargs.get("required", False), positional, nargs
-        )
+        required = self._determine_required(required, positional, nargs)
         argument = Argument(
             flags=flags,
             dest=dest,
@@ -387,7 +429,7 @@ class CommandArgumentParser:
             default=default,
             choices=choices,
             required=required,
-            help=kwargs.get("help", ""),
+            help=help,
             nargs=nargs,
             positional=positional,
         )
@@ -430,11 +472,11 @@ class CommandArgumentParser:
         values = []
         i = start
         if isinstance(spec.nargs, int):
-            # assert i + spec.nargs <= len(
-            #     args
-            # ), "Not enough arguments provided: shouldn't happen"
             values = args[i : i + spec.nargs]
             return values, i + spec.nargs
+        elif spec.nargs is None:
+            values = [args[i]]
+            return values, i + 1
         elif spec.nargs == "+":
             if i >= len(args):
                 raise CommandArgumentError(
@@ -479,6 +521,8 @@ class CommandArgumentParser:
             for next_spec in positional_args[j + 1 :]:
                 if isinstance(next_spec.nargs, int):
                     min_required += next_spec.nargs
+                elif next_spec.nargs is None:
+                    min_required += 1
                 elif next_spec.nargs == "+":
                     min_required += 1
                 elif next_spec.nargs == "?":
@@ -521,7 +565,7 @@ class CommandArgumentParser:
 
         return i
 
-    def parse_args(
+    async def parse_args(
         self, args: list[str] | None = None, from_validate: bool = False
     ) -> dict[str, Any]:
         """Parse Falyx Command arguments."""
@@ -669,7 +713,7 @@ class CommandArgumentParser:
         result.pop("help", None)
         return result
 
-    def parse_args_split(
+    async def parse_args_split(
         self, args: list[str], from_validate: bool = False
     ) -> tuple[tuple[Any, ...], dict[str, Any]]:
         """
@@ -677,7 +721,7 @@ class CommandArgumentParser:
             tuple[args, kwargs] - Positional arguments in defined order,
             followed by keyword argument mapping.
         """
-        parsed = self.parse_args(args, from_validate)
+        parsed = await self.parse_args(args, from_validate)
         args_list = []
         kwargs_dict = {}
         for arg in self._arguments:

falyx/parsers/signature.py

@@ -42,7 +42,7 @@ def infer_args_from_func(
         else:
             flags = [f"--{name.replace('_', '-')}"]
         action = "store"
-        nargs: int | str = 1
+        nargs: int | str | None = None
 
         if arg_type is bool:
             if param.default is False:

falyx/selection.py

@@ -271,7 +271,7 @@ async def prompt_for_index(
     prompt_session: PromptSession | None = None,
     prompt_message: str = "Select an option > ",
     show_table: bool = True,
-):
+) -> int:
     prompt_session = prompt_session or PromptSession()
     console = console or Console(color_system="auto")
 

falyx/version.py

@@ -1 +1 @@
-__version__ = "0.1.33"
+__version__ = "0.1.35"

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "falyx"
-version = "0.1.33"
+version = "0.1.35"
 description = "Reliable and introspectable async CLI action framework."
 authors = ["Roland Thomas Jr <roland@rtj.dev>"]
 license = "MIT"

tests/test_command.py

@@ -1,7 +1,7 @@
 # test_command.py
 import pytest
 
-from falyx.action import Action, ActionGroup, BaseIOAction, ChainedAction
+from falyx.action import Action, BaseIOAction, ChainedAction
 from falyx.command import Command
 from falyx.execution_registry import ExecutionRegistry as er
 from falyx.retry import RetryPolicy

tests/test_command_argument_parser.py

@@ -5,98 +5,109 @@ from falyx.parsers import ArgumentAction, CommandArgumentParser
 from falyx.signals import HelpSignal
 
 
-def build_parser_and_parse(args, config):
+async def build_parser_and_parse(args, config):
     cap = CommandArgumentParser()
     config(cap)
-    return cap.parse_args(args)
+    return await cap.parse_args(args)
 
 
-def test_none():
+@pytest.mark.asyncio
+async def test_none():
     def config(parser):
         parser.add_argument("--foo", type=str)
 
-    parsed = build_parser_and_parse(None, config)
+    parsed = await build_parser_and_parse(None, config)
     assert parsed["foo"] is None
 
 
-def test_append_multiple_flags():
+@pytest.mark.asyncio
+async def test_append_multiple_flags():
     def config(parser):
         parser.add_argument("--tag", action=ArgumentAction.APPEND, type=str)
 
-    parsed = build_parser_and_parse(["--tag", "a", "--tag", "b", "--tag", "c"], config)
+    parsed = await build_parser_and_parse(
+        ["--tag", "a", "--tag", "b", "--tag", "c"], config
+    )
     assert parsed["tag"] == ["a", "b", "c"]
 
 
-def test_positional_nargs_plus_and_single():
+@pytest.mark.asyncio
+async def test_positional_nargs_plus_and_single():
     def config(parser):
         parser.add_argument("files", nargs="+", type=str)
         parser.add_argument("mode", nargs=1)
 
-    parsed = build_parser_and_parse(["a", "b", "c", "prod"], config)
+    parsed = await build_parser_and_parse(["a", "b", "c", "prod"], config)
     assert parsed["files"] == ["a", "b", "c"]
     assert parsed["mode"] == "prod"
 
 
-def test_type_validation_failure():
+@pytest.mark.asyncio
+async def test_type_validation_failure():
     def config(parser):
         parser.add_argument("--count", type=int)
 
     with pytest.raises(CommandArgumentError):
-        build_parser_and_parse(["--count", "abc"], config)
+        await build_parser_and_parse(["--count", "abc"], config)
 
 
-def test_required_field_missing():
+@pytest.mark.asyncio
+async def test_required_field_missing():
     def config(parser):
         parser.add_argument("--env", type=str, required=True)
 
     with pytest.raises(CommandArgumentError):
-        build_parser_and_parse([], config)
+        await build_parser_and_parse([], config)
 
 
-def test_choices_enforced():
+@pytest.mark.asyncio
+async def test_choices_enforced():
     def config(parser):
         parser.add_argument("--mode", choices=["dev", "prod"])
 
     with pytest.raises(CommandArgumentError):
-        build_parser_and_parse(["--mode", "staging"], config)
+        await build_parser_and_parse(["--mode", "staging"], config)
 
 
-def test_boolean_flags():
+@pytest.mark.asyncio
+async def test_boolean_flags():
     def config(parser):
         parser.add_argument("--debug", action=ArgumentAction.STORE_TRUE)
         parser.add_argument("--no-debug", action=ArgumentAction.STORE_FALSE)
 
-    parsed = build_parser_and_parse(["--debug", "--no-debug"], config)
+    parsed = await build_parser_and_parse(["--debug", "--no-debug"], config)
     assert parsed["debug"] is True
     assert parsed["no_debug"] is False
-    parsed = build_parser_and_parse([], config)
-    print(parsed)
+    parsed = await build_parser_and_parse([], config)
     assert parsed["debug"] is False
     assert parsed["no_debug"] is True
 
 
-def test_count_action():
+@pytest.mark.asyncio
+async def test_count_action():
     def config(parser):
         parser.add_argument("-v", action=ArgumentAction.COUNT)
 
-    parsed = build_parser_and_parse(["-v", "-v", "-v"], config)
+    parsed = await build_parser_and_parse(["-v", "-v", "-v"], config)
     assert parsed["v"] == 3
 
 
-def test_nargs_star():
+@pytest.mark.asyncio
+async def test_nargs_star():
     def config(parser):
         parser.add_argument("args", nargs="*", type=str)
 
-    parsed = build_parser_and_parse(["one", "two", "three"], config)
+    parsed = await build_parser_and_parse(["one", "two", "three"], config)
     assert parsed["args"] == ["one", "two", "three"]
 
 
-def test_flag_and_positional_mix():
+@pytest.mark.asyncio
+async def test_flag_and_positional_mix():
     def config(parser):
         parser.add_argument("--env", type=str)
         parser.add_argument("tasks", nargs="+")
 
-    parsed = build_parser_and_parse(["--env", "prod", "build", "test"], config)
+    parsed = await build_parser_and_parse(["--env", "prod", "build", "test"], config)
     assert parsed["env"] == "prod"
     assert parsed["tasks"] == ["build", "test"]
 
@@ -134,7 +145,7 @@ def test_add_argument_multiple_optional_flags_same_dest():
     parser.add_argument("-f", "--falyx")
     arg = parser._arguments[-1]
     assert arg.dest == "falyx"
-    assert arg.flags == ["-f", "--falyx"]
+    assert arg.flags == ("-f", "--falyx")
 
 
 def test_add_argument_flag_dest_conflict():
@@ -165,7 +176,7 @@ def test_add_argument_multiple_flags_custom_dest():
     parser.add_argument("-f", "--falyx", "--test", dest="falyx")
     arg = parser._arguments[-1]
     assert arg.dest == "falyx"
-    assert arg.flags == ["-f", "--falyx", "--test"]
+    assert arg.flags == ("-f", "--falyx", "--test")
 
 
 def test_add_argument_multiple_flags_dest():
@@ -175,7 +186,7 @@ def test_add_argument_multiple_flags_dest():
     parser.add_argument("-f", "--falyx", "--test")
     arg = parser._arguments[-1]
     assert arg.dest == "falyx"
-    assert arg.flags == ["-f", "--falyx", "--test"]
+    assert arg.flags == ("-f", "--falyx", "--test")
 
 
 def test_add_argument_single_flag_dest():
@@ -185,7 +196,7 @@ def test_add_argument_single_flag_dest():
     parser.add_argument("-f")
     arg = parser._arguments[-1]
     assert arg.dest == "f"
-    assert arg.flags == ["-f"]
+    assert arg.flags == ("-f",)
 
 
 def test_add_argument_bad_dest():
@@ -257,7 +268,7 @@ def test_add_argument_default_value():
     parser.add_argument("--falyx", default="default_value")
     arg = parser._arguments[-1]
     assert arg.dest == "falyx"
-    assert arg.flags == ["--falyx"]
+    assert arg.flags == ("--falyx",)
     assert arg.default == "default_value"
 
 
@@ -297,20 +308,21 @@ def test_add_argument_default_not_in_choices():
         parser.add_argument("--falyx", choices=["a", "b"], default="c")
 
 
-def test_add_argument_choices():
+@pytest.mark.asyncio
+async def test_add_argument_choices():
     parser = CommandArgumentParser()
 
     # ✅ Choices provided
     parser.add_argument("--falyx", choices=["a", "b", "c"])
     arg = parser._arguments[-1]
     assert arg.dest == "falyx"
-    assert arg.flags == ["--falyx"]
+    assert arg.flags == ("--falyx",)
     assert arg.choices == ["a", "b", "c"]
 
-    args = parser.parse_args(["--falyx", "a"])
+    args = await parser.parse_args(["--falyx", "a"])
     assert args["falyx"] == "a"
     with pytest.raises(CommandArgumentError):
-        parser.parse_args(["--falyx", "d"])
+        await parser.parse_args(["--falyx", "d"])
 
 
 def test_add_argument_choices_invalid():
@@ -352,7 +364,7 @@ def test_add_argument_nargs():
     parser.add_argument("--falyx", nargs=2)
     arg = parser._arguments[-1]
     assert arg.dest == "falyx"
-    assert arg.flags == ["--falyx"]
+    assert arg.flags == ("--falyx",)
     assert arg.nargs == 2
 
 
@@ -377,56 +389,60 @@ def test_get_argument():
     parser.add_argument("--falyx", type=str, default="default_value")
     arg = parser.get_argument("falyx")
     assert arg.dest == "falyx"
-    assert arg.flags == ["--falyx"]
+    assert arg.flags == ("--falyx",)
     assert arg.default == "default_value"
 
 
-def test_parse_args_nargs():
+@pytest.mark.asyncio
+async def test_parse_args_nargs():
     parser = CommandArgumentParser()
     parser.add_argument("files", nargs="+", type=str)
     parser.add_argument("mode", nargs=1)
 
-    args = parser.parse_args(["a", "b", "c"])
+    args = await parser.parse_args(["a", "b", "c"])
 
     assert args["files"] == ["a", "b"]
     assert args["mode"] == "c"
 
 
-def test_parse_args_nargs_plus():
+@pytest.mark.asyncio
+async def test_parse_args_nargs_plus():
     parser = CommandArgumentParser()
     parser.add_argument("files", nargs="+", type=str)
 
-    args = parser.parse_args(["a", "b", "c"])
+    args = await parser.parse_args(["a", "b", "c"])
     assert args["files"] == ["a", "b", "c"]
 
-    args = parser.parse_args(["a"])
+    args = await parser.parse_args(["a"])
     assert args["files"] == ["a"]
 
 
-def test_parse_args_flagged_nargs_plus():
+@pytest.mark.asyncio
+async def test_parse_args_flagged_nargs_plus():
     parser = CommandArgumentParser()
     parser.add_argument("--files", nargs="+", type=str)
 
-    args = parser.parse_args(["--files", "a", "b", "c"])
+    args = await parser.parse_args(["--files", "a", "b", "c"])
     assert args["files"] == ["a", "b", "c"]
 
-    args = parser.parse_args(["--files", "a"])
+    args = await parser.parse_args(["--files", "a"])
     print(args)
     assert args["files"] == ["a"]
 
-    args = parser.parse_args([])
+    args = await parser.parse_args([])
     assert args["files"] == []
 
 
-def test_parse_args_numbered_nargs():
+@pytest.mark.asyncio
+async def test_parse_args_numbered_nargs():
     parser = CommandArgumentParser()
     parser.add_argument("files", nargs=2, type=str)
 
-    args = parser.parse_args(["a", "b"])
+    args = await parser.parse_args(["a", "b"])
     assert args["files"] == ["a", "b"]
 
     with pytest.raises(CommandArgumentError):
-        args = parser.parse_args(["a"])
+        args = await parser.parse_args(["a"])
         print(args)
 
 
@@ -436,48 +452,53 @@ def test_parse_args_nargs_zero():
         parser.add_argument("files", nargs=0, type=str)
 
 
-def test_parse_args_nargs_more_than_expected():
+@pytest.mark.asyncio
+async def test_parse_args_nargs_more_than_expected():
     parser = CommandArgumentParser()
     parser.add_argument("files", nargs=2, type=str)
 
     with pytest.raises(CommandArgumentError):
-        parser.parse_args(["a", "b", "c", "d"])
+        await parser.parse_args(["a", "b", "c", "d"])
 
 
-def test_parse_args_nargs_one_or_none():
+@pytest.mark.asyncio
+async def test_parse_args_nargs_one_or_none():
     parser = CommandArgumentParser()
     parser.add_argument("files", nargs="?", type=str)
 
-    args = parser.parse_args(["a"])
+    args = await parser.parse_args(["a"])
     assert args["files"] == "a"
 
-    args = parser.parse_args([])
+    args = await parser.parse_args([])
     assert args["files"] is None
 
 
-def test_parse_args_nargs_positional():
+@pytest.mark.asyncio
+async def test_parse_args_nargs_positional():
     parser = CommandArgumentParser()
     parser.add_argument("files", nargs="*", type=str)
 
-    args = parser.parse_args(["a", "b", "c"])
+    args = await parser.parse_args(["a", "b", "c"])
     assert args["files"] == ["a", "b", "c"]
 
-    args = parser.parse_args([])
+    args = await parser.parse_args([])
     assert args["files"] == []
 
 
-def test_parse_args_nargs_positional_plus():
+@pytest.mark.asyncio
+async def test_parse_args_nargs_positional_plus():
     parser = CommandArgumentParser()
     parser.add_argument("files", nargs="+", type=str)
 
-    args = parser.parse_args(["a", "b", "c"])
+    args = await parser.parse_args(["a", "b", "c"])
     assert args["files"] == ["a", "b", "c"]
 
     with pytest.raises(CommandArgumentError):
-        args = parser.parse_args([])
+        args = await parser.parse_args([])
 
 
-def test_parse_args_nargs_multiple_positional():
+@pytest.mark.asyncio
+async def test_parse_args_nargs_multiple_positional():
     parser = CommandArgumentParser()
     parser.add_argument("files", nargs="+", type=str)
     parser.add_argument("mode", nargs=1)
@@ -485,7 +506,7 @@ def test_parse_args_nargs_multiple_positional():
     parser.add_argument("target", nargs="*")
     parser.add_argument("extra", nargs="+")
 
-    args = parser.parse_args(["a", "b", "c", "d", "e"])
+    args = await parser.parse_args(["a", "b", "c", "d", "e"])
     assert args["files"] == ["a", "b", "c"]
     assert args["mode"] == "d"
     assert args["action"] == []
@@ -493,186 +514,209 @@ def test_parse_args_nargs_multiple_positional():
     assert args["extra"] == ["e"]
 
     with pytest.raises(CommandArgumentError):
-        parser.parse_args([])
+        await parser.parse_args([])
 
 
-def test_parse_args_nargs_invalid_positional_arguments():
+@pytest.mark.asyncio
+async def test_parse_args_nargs_invalid_positional_arguments():
     parser = CommandArgumentParser()
     parser.add_argument("numbers", nargs="*", type=int)
     parser.add_argument("mode", nargs=1)
 
     with pytest.raises(CommandArgumentError):
-        parser.parse_args(["1", "2", "c", "d"])
+        await parser.parse_args(["1", "2", "c", "d"])
 
 
-def test_parse_args_append():
+@pytest.mark.asyncio
+async def test_parse_args_append():
     parser = CommandArgumentParser()
     parser.add_argument("--numbers", action=ArgumentAction.APPEND, type=int)
 
-    args = parser.parse_args(["--numbers", "1", "--numbers", "2", "--numbers", "3"])
+    args = await parser.parse_args(["--numbers", "1", "--numbers", "2", "--numbers", "3"])
     assert args["numbers"] == [1, 2, 3]
 
-    args = parser.parse_args(["--numbers", "1"])
+    args = await parser.parse_args(["--numbers", "1"])
     assert args["numbers"] == [1]
 
-    args = parser.parse_args([])
+    args = await parser.parse_args([])
     assert args["numbers"] == []
 
 
-def test_parse_args_nargs_append():
+@pytest.mark.asyncio
+async def test_parse_args_nargs_append():
     parser = CommandArgumentParser()
     parser.add_argument("numbers", action=ArgumentAction.APPEND, type=int, nargs="*")
     parser.add_argument("--mode")
 
-    args = parser.parse_args(["1", "2", "3", "--mode", "numbers", "4", "5"])
+    args = await parser.parse_args(["1", "2", "3", "--mode", "numbers", "4", "5"])
     assert args["numbers"] == [[1, 2, 3], [4, 5]]
 
-    args = parser.parse_args(["1"])
+    args = await parser.parse_args(["1"])
     assert args["numbers"] == [[1]]
 
-    args = parser.parse_args([])
+    args = await parser.parse_args([])
     assert args["numbers"] == []
 
 
-def test_parse_args_append_flagged_invalid_type():
+@pytest.mark.asyncio
+async def test_parse_args_append_flagged_invalid_type():
     parser = CommandArgumentParser()
     parser.add_argument("--numbers", action=ArgumentAction.APPEND, type=int)
 
     with pytest.raises(CommandArgumentError):
-        parser.parse_args(["--numbers", "a"])
+        await parser.parse_args(["--numbers", "a"])
 
 
-def test_append_groups_nargs():
+@pytest.mark.asyncio
+async def test_append_groups_nargs():
     cap = CommandArgumentParser()
     cap.add_argument("--item", action=ArgumentAction.APPEND, type=str, nargs=2)
 
-    parsed = cap.parse_args(["--item", "a", "b", "--item", "c", "d"])
+    parsed = await cap.parse_args(["--item", "a", "b", "--item", "c", "d"])
     assert parsed["item"] == [["a", "b"], ["c", "d"]]
 
 
-def test_extend_flattened():
+@pytest.mark.asyncio
+async def test_extend_flattened():
     cap = CommandArgumentParser()
     cap.add_argument("--value", action=ArgumentAction.EXTEND, type=str)
 
-    parsed = cap.parse_args(["--value", "x", "--value", "y"])
+    parsed = await cap.parse_args(["--value", "x", "--value", "y"])
     assert parsed["value"] == ["x", "y"]
 
 
-def test_parse_args_split_order():
+@pytest.mark.asyncio
+async def test_parse_args_split_order():
     cap = CommandArgumentParser()
     cap.add_argument("a")
     cap.add_argument("--x")
     cap.add_argument("b", nargs="*")
-    args, kwargs = cap.parse_args_split(["1", "--x", "100", "2"])
+    args, kwargs = await cap.parse_args_split(["1", "--x", "100", "2"])
     assert args == ("1", ["2"])
     assert kwargs == {"x": "100"}
 
 
-def test_help_signal_triggers():
+@pytest.mark.asyncio
+async def test_help_signal_triggers():
     parser = CommandArgumentParser()
     parser.add_argument("--foo")
     with pytest.raises(HelpSignal):
-        parser.parse_args(["--help"])
+        await parser.parse_args(["--help"])
 
 
-def test_empty_parser_defaults():
+@pytest.mark.asyncio
+async def test_empty_parser_defaults():
     parser = CommandArgumentParser()
     with pytest.raises(HelpSignal):
-        parser.parse_args(["--help"])
+        await parser.parse_args(["--help"])
 
 
-def test_extend_basic():
+@pytest.mark.asyncio
+async def test_extend_basic():
     parser = CommandArgumentParser()
     parser.add_argument("--tag", action=ArgumentAction.EXTEND, type=str)
 
-    args = parser.parse_args(["--tag", "a", "--tag", "b", "--tag", "c"])
+    args = await parser.parse_args(["--tag", "a", "--tag", "b", "--tag", "c"])
     assert args["tag"] == ["a", "b", "c"]
 
 
-def test_extend_nargs_2():
+@pytest.mark.asyncio
+async def test_extend_nargs_2():
     parser = CommandArgumentParser()
     parser.add_argument("--pair", action=ArgumentAction.EXTEND, type=str, nargs=2)
 
-    args = parser.parse_args(["--pair", "a", "b", "--pair", "c", "d"])
+    args = await parser.parse_args(["--pair", "a", "b", "--pair", "c", "d"])
     assert args["pair"] == ["a", "b", "c", "d"]
 
 
-def test_extend_nargs_star():
+@pytest.mark.asyncio
+async def test_extend_nargs_star():
     parser = CommandArgumentParser()
     parser.add_argument("--files", action=ArgumentAction.EXTEND, type=str, nargs="*")
 
-    args = parser.parse_args(["--files", "x", "y", "z"])
+    args = await parser.parse_args(["--files", "x", "y", "z"])
     assert args["files"] == ["x", "y", "z"]
 
-    args = parser.parse_args(["--files"])
+    args = await parser.parse_args(["--files"])
     assert args["files"] == []
 
 
-def test_extend_nargs_plus():
+@pytest.mark.asyncio
+async def test_extend_nargs_plus():
     parser = CommandArgumentParser()
     parser.add_argument("--inputs", action=ArgumentAction.EXTEND, type=int, nargs="+")
 
-    args = parser.parse_args(["--inputs", "1", "2", "3", "--inputs", "4"])
+    args = await parser.parse_args(["--inputs", "1", "2", "3", "--inputs", "4"])
     assert args["inputs"] == [1, 2, 3, 4]
 
 
-def test_extend_invalid_type():
+@pytest.mark.asyncio
+async def test_extend_invalid_type():
     parser = CommandArgumentParser()
     parser.add_argument("--nums", action=ArgumentAction.EXTEND, type=int)
 
     with pytest.raises(CommandArgumentError):
-        parser.parse_args(["--nums", "a"])
+        await parser.parse_args(["--nums", "a"])
 
 
-def test_greedy_invalid_type():
+@pytest.mark.asyncio
+async def test_greedy_invalid_type():
     parser = CommandArgumentParser()
     parser.add_argument("--nums", nargs="*", type=int)
     with pytest.raises(CommandArgumentError):
-        parser.parse_args(["--nums", "a"])
+        await parser.parse_args(["--nums", "a"])
 
 
-def test_append_vs_extend_behavior():
+@pytest.mark.asyncio
+async def test_append_vs_extend_behavior():
     parser = CommandArgumentParser()
     parser.add_argument("--x", action=ArgumentAction.APPEND, nargs=2)
     parser.add_argument("--y", action=ArgumentAction.EXTEND, nargs=2)
 
-    args = parser.parse_args(
+    args = await parser.parse_args(
         ["--x", "a", "b", "--x", "c", "d", "--y", "1", "2", "--y", "3", "4"]
     )
     assert args["x"] == [["a", "b"], ["c", "d"]]
     assert args["y"] == ["1", "2", "3", "4"]
 
 
-def test_append_vs_extend_behavior_error():
+@pytest.mark.asyncio
+async def test_append_vs_extend_behavior_error():
     parser = CommandArgumentParser()
     parser.add_argument("--x", action=ArgumentAction.APPEND, nargs=2)
     parser.add_argument("--y", action=ArgumentAction.EXTEND, nargs=2)
 
     # This should raise an error because the last argument is not a valid pair
     with pytest.raises(CommandArgumentError):
-        parser.parse_args(["--x", "a", "b", "--x", "c", "d", "--y", "1", "2", "--y", "3"])
+        await parser.parse_args(
+            ["--x", "a", "b", "--x", "c", "d", "--y", "1", "2", "--y", "3"]
+        )
 
     with pytest.raises(CommandArgumentError):
-        parser.parse_args(["--x", "a", "b", "--x", "c", "--y", "1", "--y", "3", "4"])
+        await parser.parse_args(
+            ["--x", "a", "b", "--x", "c", "--y", "1", "--y", "3", "4"]
+        )
 
 
-def test_extend_positional():
+@pytest.mark.asyncio
+async def test_extend_positional():
     parser = CommandArgumentParser()
     parser.add_argument("files", action=ArgumentAction.EXTEND, type=str, nargs="*")
 
-    args = parser.parse_args(["a", "b", "c"])
+    args = await parser.parse_args(["a", "b", "c"])
     assert args["files"] == ["a", "b", "c"]
 
-    args = parser.parse_args([])
+    args = await parser.parse_args([])
     assert args["files"] == []
 
 
-def test_extend_positional_nargs():
+@pytest.mark.asyncio
+async def test_extend_positional_nargs():
     parser = CommandArgumentParser()
     parser.add_argument("files", action=ArgumentAction.EXTEND, type=str, nargs="+")
 
-    args = parser.parse_args(["a", "b", "c"])
+    args = await parser.parse_args(["a", "b", "c"])
     assert args["files"] == ["a", "b", "c"]
 
     with pytest.raises(CommandArgumentError):
-        parser.parse_args([])
+        await parser.parse_args([])