比较不太流行和不太流行的CLI库的比较：悬崖，普拉克，铅和其他（第2部分）

 from cliff import command from cliff.lister import Lister class Command(command.Command): """Command with a parser shortcut.""" def get_parser(self, prog_name): parser = super().get_parser(prog_name) self.extend_parser(parser) return parser def extend_parser(self, parser): ... class Add(Command): """Add new task.""" def extend_parser(self, parser): parser.add_argument("title", help="Task title") def take_action(self, parsed_args): task = self.app.todoapp.add_task(parsed_args.title) print(task, "created with number", task.number, end=".\n") class Show(Lister, Command): """Show current tasks.""" def extend_parser(self, parser): parser.add_argument( "--show-done", action="store_true", help="Include done tasks" ) def take_action(self, parsed_args): tasks = self.app.todoapp.list_tasks(show_done=parsed_args.show_done) #     'there is no todos'   #      return ( ("Number", "Title", "Status"), [[task.number, task.title, "" if task.done else "✘"] for task in tasks], ) class Done(Command): """Mark task as done.""" def extend_parser(self, parser): parser.add_argument("number", type=int, help="Task number") def take_action(self, parsed_args): task = self.app.todoapp.task_done(number=parsed_args.number) print(task, "marked as done.") #   Done    class Remove(Done): """Remove task from the list.""" def take_action(self, parsed_args): task = self.app.todoapp.remove_task(number=parsed_args.number) print(task, "removed from the list.") 

 from cliff import app from cliff.commandmanager import CommandManager from todolib import TodoApp, __version__ class App(app.App): def __init__(self): #   add_command, CommandManager  #    setuptools entrypoint manager = CommandManager("todo_cliff") manager.add_command("add", Add) manager.add_command("show", Show) manager.add_command("done", Done) manager.add_command("remove", Remove) super().__init__( description="Todo notes on cliff", version=__version__, command_manager=manager, deferred_help=True, ) self.todoapp = None def initialize_app(self, argv): self.todoapp = TodoApp.fromenv() def clean_up(self, cmd, result, err): self.todoapp.save() def main(args=sys.argv[1:]) -> int: app = App() return app.run(argv=args) 

 import plac import todolib class TodoInterface: commands = "add", "show", "done", "remove" def __init__(self): self.app = todolib.TodoApp.fromenv() def __enter__(self): return self def __exit__(self, exc_type, exc_val, exc_tb): self.app.save() def add(self, task): """ Add new task. """ task = self.app.add_task(title=task) print(task, "created with number", task.number, end=".\n") def show(self, show_done: plac.Annotation("Include done tasks", kind="flag")): """ Show current tasks. """ self.app.print_tasks(show_done=show_done) def done(self, number: "Task number"): """ Mark task as done. """ task = self.app.task_done(number=int(number)) print(task, "marked as done.") def remove(self, number: "Task number"): """ Remove task from the list. """ task = self.app.remove_task(number=int(number)) print(task, "removed from the list.") if __name__ == "__main__": plac.Interpreter.call(TodoInterface) 

 from plumbum import cli, colors class App(cli.Application): """Todo notes on plumbum.""" VERSION = todolib.__version__ verbosity = cli.CountOf("-v", help="Increase verbosity") def main(self, *args): if args: print(colors.red | f"Unknown command: {args[0]!r}.") return 1 if not self.nested_command: # will be ``None`` if no sub-command follows print(colors.red | "No command given.") return 1 class Command(cli.Application): """Command with todoapp object""" def __init__(self, executable): super().__init__(executable) self.todoapp = todolib.TodoApp.fromenv() atexit.register(self.todoapp.save) def log_task(self, task, msg): print("Task", colors.green | task.title, msg, end=".\n") @App.subcommand("add") class Add(Command): """Add new task""" def main(self, task): task = self.todoapp.add_task(title=task) self.log_task(task, "added to the list") @App.subcommand("show") class Show(Command): """Show current tasks""" show_done = cli.Flag("--show-done", help="Include done tasks") def main(self): self.todoapp.print_tasks(self.show_done) @App.subcommand("done") class Done(Command): """Mark task as done""" def main(self, number: int): task = self.todoapp.task_done(number) self.log_task(task, "marked as done") @App.subcommand("remove") class Remove(Command): """Remove task from the list""" def main(self, number: int): task = self.todoapp.remove_task(number) self.log_task(task, "removed from the list.") if __name__ == '__main__': App.run() 

 import cmd2 import todolib class App(cmd2.Cmd): def __init__(self, **kwargs): super().__init__(**kwargs) self.todoapp = todolib.TodoApp.fromenv() def __enter__(self): return self def __exit__(self, exc_type, exc_val, exc_tb): self.todoapp.save() def do_add(self, title): """Add new task.""" task = self.todoapp.add_task(str(title)) self.poutput(f"{task} created with number {task.number}.") def do_show(self, show_done): """Show current tasks.""" self.todoapp.print_tasks(bool(show_done)) def do_done(self, number): """Mark task as done.""" task = self.todoapp.task_done(int(number)) self.poutput(f"{task} marked as done.") def do_remove(self, number): """Remove task from the list.""" task = self.todoapp.remove_task(int(number)) self.poutput(f"{task} removed from the list.") def main(**kwargs): with App(**kwargs) as app: app.cmdloop() if __name__ == '__main__': main() 

 import cmd2 from todo_argparse import get_parser parser = get_parser(progname="todo_cmd2_cli") class App(cmd2.Cmd): def __init__(self, **kwargs): super().__init__(**kwargs) self.todoapp = todolib.TodoApp.fromenv() def __enter__(self): return self def __exit__(self, exc_type, exc_val, exc_tb): self.todoapp.save() def do_add(self, args): """Add new task.""" task = self.todoapp.add_task(args.title) self.poutput(f"{task} created with number {task.number}.") def do_show(self, args): """Show current tasks.""" self.todoapp.print_tasks(args.show_done) def do_done(self, args): """Mark task as done.""" task = self.todoapp.task_done(args.number) self.poutput(f"{task} marked as done.") def do_remove(self, args): """Remove task from the list.""" task = self.todoapp.remove_task(args.number) self.poutput(f"{task} removed from the list.") parser.add.set_defaults(func=do_add) parser.show.set_defaults(func=do_show) parser.done.set_defaults(func=do_done) parser.remove.set_defaults(func=do_remove) @cmd2.with_argparser(parser) def do_base(self, args): func = getattr(args, "func", None) if func: func(self, args) else: print("No command provided.") print("Call with --help to get available commands.") def main(argv=None): with App() as app: app.do_base(argv or sys.argv[1:]) if __name__ == '__main__': main() 

 import urwid from urwid import Button import todolib class App(urwid.WidgetPlaceholder): max_box_levels = 4 def __init__(self): super().__init__(urwid.SolidFill()) self.todoapp = None self.box_level = 0 def __enter__(self): self.todoapp = todolib.TodoApp.fromenv() self.new_menu( "Todo notes on urwid", #       ,  #      Button("New task", on_press=add), Button("List tasks", on_press=list_tasks), ) return self def __exit__(self, exc_type, exc_val, exc_tb): self.todoapp.save() def new_menu(self, title, *items): self.new_box(menu(title, *items)) def new_box(self, widget): self.box_level += 1 # overlay      , #     LineBox    self.original_widget = urwid.Overlay( # LineBox  unicode-    self.original_widget, align="center", width=30, valign="middle", height=10, ) def popup(self, text): self.new_menu(text, Button("To menu", on_press=lambda _: self.pop(levels=2))) def keypress(self, size, key): if key != "esc": super().keypress(size, key=key) elif self.box_level > 0: self.pop() def pop(self, levels=1): for _ in range(levels): self.original_widget = self.original_widget[0] self.box_level -= levels if self.box_level == 0: raise urwid.ExitMainLoop() 

 app = App() def menu(title, *items) -> urwid.ListBox: body = [urwid.Text(title), urwid.Divider()] body.extend(items) return urwid.ListBox(urwid.SimpleFocusListWalker(body)) def add(button): edit = urwid.Edit("Title: ") def handle(button): text = edit.edit_text app.todoapp.add_task(text) app.popup("Task added") app.new_menu("New task", edit, Button("Add", on_press=handle)) def list_tasks(button): tasks = app.todoapp.list_tasks(show_done=True) buttons = [] for task in tasks: status = "done" if task.done else "not done" text = f"{task.title} [{status}]" #         button = Button(text, on_press=task_actions, user_data=task.number) buttons.append(button) app.new_menu("Task list", *buttons) def task_actions(button, number): def done(button, number): app.todoapp.task_done(number) app.popup("Task marked as done.") def remove(button, number): app.todoapp.remove_task(number) app.popup("Task removed from the list.") btn_done = Button("Mark as done", on_press=done, user_data=number) btn_remove = Button("Remove from the list", on_press=remove, user_data=number) app.new_menu("Actions", btn_done, btn_remove)