Make first tasks and some final methods
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661e983ab6
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@ -1,12 +1,16 @@
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from dataclasses import dataclass
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from typing import Optional, Collection, Any
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from abc import abstractmethod
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class DeviceLifecycleState:
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pass # TODO(Homework #3)
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from abc import abstractmethod, ABC
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import enum
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class DevaceError(Exception):
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class DeviceLifecycleState(enum.Enum):
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INIT = "INIT"
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OPEN = "OPEN"
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CLOSE = "CLOSE"
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class DeviceError(Exception):
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pass
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@ -18,6 +22,12 @@ class NonWritableTrait(Exception):
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pass
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class NoSuchTrait(Exception):
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pass
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class NoSuchAction(Exception):
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pass
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@dataclass
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class TraitDescriptor:
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name: str
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@ -33,8 +43,7 @@ class ActionDescriptor:
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info: Optional[str] = None
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class Device:
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# TODO(Homework #3)
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class Device(ABC):
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_state = DeviceLifecycleState.INIT
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@property
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@ -44,9 +53,14 @@ class Device:
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def close(self):
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self._state = DeviceLifecycleState.CLOSE
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@property
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@abstractmethod
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def trait_descriptors(self) -> Collection[TraitDescriptor]:
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pass
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@property
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@abstractmethod
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def action_descriptors(self) -> Collection[ActionDescriptor]:
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pass
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@ -1,8 +1,85 @@
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from turtle import Turtle
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from controls.device import SynchronyDevice
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from controls.device import (
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SynchronyDevice,
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TraitDescriptor,
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ActionDescriptor,
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NoSuchTrait,
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NoSuchAction,
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)
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from typing import Collection, Optional, Any
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import inspect
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class TurtleDevice(SynchronyDevice):
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pass # TODO(Homework #3)
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def __init__(self) -> None:
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super().__init__()
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self.open()
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def open(self):
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self.turtle = Turtle()
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def close(self):
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del self.turtle
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def execute(self, action_name: str, *args, **kwargs):
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pass
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def read(self, trait_name: str) -> Any:
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traits = self.trait_descriptors
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for trait in traits:
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if trait.name == trait_name:
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return self.turtle.__getattribute__(trait_name)
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raise NoSuchTrait
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def write(self, trait_name: str, value: Any) -> bool:
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traits = self.trait_descriptors
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for trait in traits:
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if trait.name == trait_name:
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attribute_type = type(self.turtle.__getattribute__(trait_name))
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assert (
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type(value) == attribute_type
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), f"Wrong value type. Type should be {attribute_type}, but you pass {type(value)}"
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self.turtle.__setattr__(trait_name, value)
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return True
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raise NoSuchTrait
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def invalidate(self, trait_name: str):
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pass
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def __getitem__(self, trait_name: str) -> Optional[Any]:
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pass
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@property
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def trait_descriptors(self) -> Collection[TraitDescriptor]:
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return [
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TraitDescriptor(name=attr, info=getattr(self.turtle, attr).__doc__)
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for attr in dir(self.turtle)
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if attr[0] != "_"
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and attr[-1] != "_"
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and not callable(getattr(self.turtle, attr))
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]
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@property
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def action_descriptors(self) -> Collection[ActionDescriptor]:
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methods = [
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attr
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for attr in dir(self.turtle)
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if attr[0] != "_"
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and attr[-1] != "_"
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and callable(getattr(self.turtle, attr))
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]
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result = []
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for method_name in methods:
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method = getattr(self.turtle, method_name)
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args = inspect.signature(method).parameters
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arg_types = {}
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for arg_name, arg in args.items():
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arg_types[arg_name] = arg.annotation
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result.append(
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ActionDescriptor(
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name=method_name, info=method.__doc__, arguments=arg_types
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)
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)
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return result
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@ -9,4 +9,6 @@ class DeviceLifecycleStateTest(TestCase):
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pass
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def test_enum(self):
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self.assertEqual(DeviceLifecycleStateTest["INIT"], DeviceLifecycleStateTest.INIT)
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# NOTE: это имеется в виду?
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# self.assertEqual(DeviceLifecycleStateTest["INIT"], DeviceLifecycleStateTest.INIT)
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self.assertEqual(DeviceLifecycleState["INIT"], DeviceLifecycleState.INIT)
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