forked from Advanced_Python/advanced-python-homework-2023
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@ -1,8 +0,0 @@
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from turtle import Turtle
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from controls.device import SynchronyDevice
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class TurtleDevice(SynchronyDevice):
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pass # TODO(Homework #3)
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1
turtle/.gitignore
vendored
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1
turtle/.gitignore
vendored
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@ -0,0 +1 @@
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test.ipynb
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@ -1,12 +1,16 @@
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from dataclasses import dataclass
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from dataclasses import dataclass
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from typing import Optional, Collection, Any
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from typing import Optional, Collection, Any
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from abc import abstractmethod
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from abc import ABC, abstractmethod, abstractproperty
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from enum import Enum
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class DeviceLifecycleState:
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pass # TODO(Homework #3)
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class DevaceError(Exception):
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class DeviceLifecycleState(Enum):
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INIT = 0
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OPEN = 1
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CLOSE = 2
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class DeviceError(Exception):
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pass
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pass
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@ -33,8 +37,7 @@ class ActionDescriptor:
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info: Optional[str] = None
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info: Optional[str] = None
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class Device:
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class Device(ABC):
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# TODO(Homework #3)
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_state = DeviceLifecycleState.INIT
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_state = DeviceLifecycleState.INIT
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@property
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@property
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@ -44,9 +47,11 @@ class Device:
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def close(self):
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def close(self):
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self._state = DeviceLifecycleState.CLOSE
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self._state = DeviceLifecycleState.CLOSE
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@abstractproperty
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def trait_descriptors(self) -> Collection[TraitDescriptor]:
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def trait_descriptors(self) -> Collection[TraitDescriptor]:
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pass
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pass
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@abstractproperty
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def action_descriptors(self) -> Collection[ActionDescriptor]:
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def action_descriptors(self) -> Collection[ActionDescriptor]:
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pass
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pass
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@ -79,4 +84,4 @@ class SynchronyDevice(Device):
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@abstractmethod
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@abstractmethod
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def invalidate(self, trait_name: str):
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def invalidate(self, trait_name: str):
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"""Invalidate logical state of trait `trait_name`"""
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"""Invalidate logical state of trait `trait_name`"""
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pass
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pass
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85
turtle/equipment/turtle_device.py
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85
turtle/equipment/turtle_device.py
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from turtle import Turtle
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from typing import Optional, Collection, Any
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from controls.device import SynchronyDevice
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from controls.device import TraitDescriptor
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from controls.device import ActionDescriptor
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from controls.device import DeviceError
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import inspect
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class TurtleDevice(SynchronyDevice):
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def open(self):
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self.turtle = Turtle()
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self.descriptors = dict(traits=dict(), actions=dict())
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super().open()
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def close(self):
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self.turtle.clear()
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super().close()
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def trait_descriptors(self) -> Collection[TraitDescriptor]:
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return self.get_descriptors()["traits"]
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def action_descriptors(self) -> Collection[ActionDescriptor]:
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return self.get_descriptors()["actions"]
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def __getitem__(self, trait_name: str) -> Optional[Any]:
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"""Return logical state of trait `trait_name`."""
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return self.descriptors[trait_name]
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def read_descriptors(self, arg):
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self.descriptors = self.get_descriptors()
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return self.descriptors
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def read(self, trait_name: str) -> Any:
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"""Read physical state of trait `trait_name` from device."""
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self.read_descriptors()
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return self.descriptors[trait_name]
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def write(self, trait_name: str, value: Any) -> bool:
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"""Turtle traits are not writable"""
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# trait_desc = self.trait_descriptors.get(trait_name)
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# if trait_desc.writable:
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# return getattr(self.turtle, trait_name)(value)
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super().write()
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def execute(self, action_name: str, *args, **kwargs):
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"""Execute action `action_name`, using `args` and `kwargs` as action argument."""
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action = self.get_descriptors()["actions"].get(action_name)
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if action:
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return getattr(self.turtle, action_name)(*args, **kwargs)
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super().execute()
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def invalidate(self, trait_name: str):
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"""Invalidate logical state of trait `trait_name`"""
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if self.trait_descriptors.get(trait_name):
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self.trait_descriptors[trait_name] = None
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raise DeviceError()
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def get_descriptors(self):
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descriptors = dict(actions=dict(), traits=dict())
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for k, v in self.turtle.__dict__.items():
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if not k.startswith("_"):
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descriptors["traits"][k] = TraitDescriptor(k,
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inspect.getdoc(v),
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readable=True,
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writable=False)
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for m_name, member in inspect.getmembers(Turtle):
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if m_name.startswith("_"): continue
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if m_name.lower() != m_name: continue
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doc = inspect.getdoc(member)
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if doc is None: continue
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if not inspect.isfunction(member):
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descriptors["traits"][m_name] = TraitDescriptor(m_name,
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doc,
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readable=True,
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writable=False)
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else:
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sig = inspect.signature(member)
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params_dict = dict(sig.parameters)
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descriptors["actions"][m_name] = ActionDescriptor(m_name,
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arguments=params_dict,
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info=doc)
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return descriptors
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