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import attr
from green_magic.utils import Observer
@attr.s
class CommandsAccumulator(Observer):
""""""
commands = attr.ib(init=False, default={})
def update(self, subject) -> None:
self.commands[getattr(subject, 'name', str(subject.state))] = subject.state
getattr
str
def __contains__(self, item):
return item in self.commands
class CommandGetter:
_commands_accumulator = attr.ib(init=True, default=CommandsAccumulator())
@property
def accumulator(self):
return self._commands_accumulator
def __getattr__(self, item):
if item not in self._commands_accumulator.commands:
raise KeyError(f"Item '{item}' not found in [{', '.join(str(_) for _ in self._commands_accumulator.commands.keys())}]")
return self._commands_accumulator.commands[item]
class CommandsManager:
"""[summary]
Args:
prototypes (dict, optional): initial prototypes to be supplied
command_factory (callable, optional): a callable that returns an instance of Command
"""
_commands_getter = attr.ib(init=True, default=CommandGetter())
def command(self):
return self._commands_getter
def commands_dict(self):
return self._commands_accumulator.commands
boromir674 /
so-magic
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