Can you explain how the @property decorator is used in this python code?
class Ingest:
 """
 An Ingest context, that is, which dumps are being attempted for what execution date.
 """

 LMS\_DATE\_KEY = "lms\_date"

 @staticmethod
 def loading\_schema\_date\_key(ls: udp.LoadingSchema) -> str:
 return f"{ls.name}\_date"

 def \_\_init\_\_(self, execution\_date: datetime):
 self.execution\_date = execution\_date

 def set\_variable(self, key: str, set\_fn: Callable[[], Any]) -> None:
 """
 Sets Airdflow Variable Key to value returned by set\_fn if key is None
 and no override is defined
 """
 # override patch: search for other instances of "override path" for more.
 if override\_value := Variable.get(
 override\_key := KEY\_FMT.format(group="\*", key=key), None
 ):
 logger.warning(
 f"Override key '{override\_key}' already set as '{override\_value}'. Doing nothing."
 )
 return

 \_key = ingest\_variable\_key(self.execution\_date, key)
 if Variable.get(\_key, None) is None:
 val = set\_fn()
 if val is None:
 raise Exception(
 f"Could not set value for '{\_key}', no value was returned."
 )
 logger.info(f"Setting a new '{\_key}' value of {val}.")
 Variable.set(\_key, val)

 def get\_variable(self, key: str) -> Any:
 """
 Gets a value for an Airflow Variable Key, with extended functionality
 of supporting fetching overrides
 """
 # override patch: search for other instances of "override path" for more.
 if val := Variable.get(\_key := KEY\_FMT.format(group="\*", key=key), None):
 logger.warning(f"Using '{val}' from override key '{\_key}'.")
 return val

 \_key = ingest\_variable\_key(self.execution\_date, key)
 val = Variable.get(\_key)
 logger.info(f"Using '{val}' from '{\_key}'.")
 return val

 @property
 def lms\_fetcher(self):
 cd\_dated\_id = lms.CanvasDumpDatedId.from\_str(
 self.get\_variable(self.LMS\_DATE\_KEY)
 )
 return lms.LmsFetcher(dated\_id=cd\_dated\_id)

 def loading\_schema\_fetcher(self, ls: udp.LoadingSchema):
 ls\_folder = self.get\_variable(self.loading\_schema\_date\_key(ls))
 return loading\_schema.LoadingSchemaFetcher(
 loading\_schema=ls, folder\_name=ls\_folder
 )

 @staticmethod
 def operator(
 task\_id: str, \*\*op\_kwargs: Any
 ) -> Callable[..., Callable[..., PythonOperator]]:
 def decorator(fn: Callable[..., Any]) -> Callable[..., PythonOperator]:
 @wraps(fn)
 def wrapper(\*\*kwargs: Any) -> PythonOperator:
 def with\_ingest(execution\_date: datetime, \*\*context: Any):
 ingest = Ingest(execution\_date=execution\_date)
 fn(
 ingest=ingest,
 execution\_date=execution\_date,
 \*\*kwargs,
 \*\*context,
 )

 return PythonOperator(
 task\_id=task\_id.format(\*\*kwargs),
 python\_callable=with\_ingest,
 \*\*op\_kwargs,
 )

 return wrapper

 return decorator
0982e39f-758c-4022-863c-7831af244eba
Можете ли вы объяснить, как декоратор `@property` используется в этом коде Python?

Класс приема:

```python
LMS_DATE_KEY = "lms_date"

@staticmethod
def loading_schema_date_key(ls: udp.LoadingSchema) -> str:
return f"{ls.name}_date"

def __init__(self, execution_date: datetime):
self.execution_date = execution_date

def set_variable(self, key: str, set_fn: Callable[[], Any]) -> None:

"""
Sets Airdflow Variable Key to value returned by set_fn if key is None
and no override is defined
"""
```

**Патч переопределения: найдите другие экземпляры «путь переопределения», чтобы узнать больше.**

```python
if override_value := Variable.get(
override_key := KEY_FMT.format(group="*", key=key), None
):
logger.warning(
f"Override key '{override_key}' already set as '{override_value}'. Doing nothing."
)
return

_key = ingest_variable_key(self.execution_date, key)
if Variable.get(_key, None) is None:
val = set_fn()
if val is None:
raise Exception(
f"Could not set value for '{_key}', no value was returned."
)
logger.info(f"Setting a new '{_key}' value of {val}.")
Variable.set(_key, val)

def get_variable(self, key: str) -> Any:
"""
Gets a value for an Airflow Variable Key, with extended functionality
of supporting fetching overrides
"""
```
**Патч переопределения: найдите другие экземпляры «путь переопределения», чтобы узнать больше.**

```python
if val := Variable.get(_key := KEY_FMT.format(group="*", key=key), None):
logger.warning(f"Using '{val}' from override key '{_key}'.")
return val

_key = ingest_variable_key(self.execution_date, key)
val = Variable.get(_key)
logger.info(f"Using '{val}' from '{_key}'.")
return val

@property
def lms_fetcher(self):
cd_dated_id = lms.CanvasDumpDatedId.from_str(
self.get_variable(self.LMS_DATE_KEY)
)
return lms.LmsFetcher(dated_id=cd_dated_id)

def loading_schema_fetcher(self, ls: udp.LoadingSchema):
ls_folder = self.get_variable(self.loading_schema_date_key(ls))
return loading_schema.LoadingSchemaFetcher(
loading_schema=ls, folder_name=ls_folder
)

@staticmethod
def operator(
task_id: str, **op_kwargs: Any
) -> Callable[..., Callable[..., PythonOperator]]:
def decorator(fn: Callable[..., Any]) -> Callable[..., PythonOperator]:
@wraps(fn)
def wrapper(**kwargs: Any) -> PythonOperator:
def with_ingest(execution_date: datetime, **context: Any):
ingest = Ingest(execution_date=execution_date)
fn(
ingest=ingest,
execution_date=execution_date,
**kwargs,
**context,
)

return PythonOperator(
task_id=task_id.format(**kwargs),
python_callable=with_ingest,
**op_kwargs,
)

return wrapper

return decorator
```

submitted
Вы можете объяснить, как используется декоратор @propertyvariable в этом коде python? класс Ingest: """ Контекст ингинитации, то есть, ->\\\\\_исполнение, то есть, какие даты выполнения пытаются выполнить. """ LMS\_DATE\_KEY = "lms\_date" @staticmethod def defending\\schema\_date\_date" @staticmethod defending\\\\\\\\\\\keywords: udp.Loading: str:str:str:str:str:str:str:str:str:str:str:str:str:str:str:str:str:str:str:str:str:str:str:str:str:str:str:str:str:str:str:str
{"source": "ewof/sharegpt-instruct-unfiltered-deduped", "kind": "human", "evolved_from": null}