12/20/2023 0 Comments Airflow icon modulesdatetime ( 2021, 1, 1, tz = "UTC" ), catchup = False, tags =, ) def example_dag_decorator ( email : str = ): """ DAG to send server IP to email. Schedule interval put in place, the logical date is going to indicate the timeĪt which it marks the start of the data interval, where the DAG run’s startĭate would then be the logical date + scheduled ( schedule = None, start_date = pendulum. However, when the DAG is being automatically scheduled, with certain Logical is because of the abstract nature of it having multiple meanings,ĭepending on the context of the DAG run itself.įor example, if a DAG run is manually triggered by the user, its logical date would be theĭate and time of which the DAG run was triggered, and the value should be equal (formally known as execution date), which describes the intended time aĭAG run is scheduled or triggered. Run’s start and end date, there is another date called logical date This period describes the time when the DAG actually ‘ran.’ Aside from the DAG Tasks specified inside a DAG are also instantiated intoĪ DAG run will have a start date when it starts, and end date when it ends. In much the same way a DAG instantiates into a DAG Run every time it’s run, Run will have one data interval covering a single day in that 3 month period,Īnd that data interval is all the tasks, operators and sensors inside the DAG Those DAG Runs will all have been started on the same actual day, but each DAG The previous 3 months of data-no problem, since Airflow can backfill the DAGĪnd run copies of it for every day in those previous 3 months, all at once. It’s been rewritten, and you want to run it on Same DAG, and each has a defined data interval, which identifies the period ofĪs an example of why this is useful, consider writing a DAG that processes aĭaily set of experimental data. If schedule is not enough to express the DAG’s schedule, see Timetables.įor more information on logical date, see Data Interval andĮvery time you run a DAG, you are creating a new instance of that DAG whichĪirflow calls a DAG Run. Tensor learning, algebra and backends to seamlessly use NumPy, MXNet, PyTorch, TensorFlow or CuPy.For more information on schedule values, see DAG Run. Python backend system that decouples API from implementation unumpy provides a NumPy API. Manipulate JSON-like data with NumPy-like idioms. Multi-dimensional arrays with broadcasting and lazy computing for numerical analysis. NumPy-compatible sparse array library that integrates with Dask and SciPy's sparse linear algebra.ĭeep learning framework that accelerates the path from research prototyping to production deployment.Īn end-to-end platform for machine learning to easily build and deploy ML powered applications.ĭeep learning framework suited for flexible research prototyping and production.Ī cross-language development platform for columnar in-memory data and analytics. Labeled, indexed multi-dimensional arrays for advanced analytics and visualization NumPy-compatible array library for GPU-accelerated computing with Python.Ĭomposable transformations of NumPy programs: differentiate, vectorize, just-in-time compilation to GPU/TPU. NumPy's API is the starting point when libraries are written to exploit innovative hardware, create specialized array types, or add capabilities beyond what NumPy provides.ĭistributed arrays and advanced parallelism for analytics, enabling performance at scale. With this power comes simplicity: a solution in NumPy is often clear and elegant. NumPy brings the computational power of languages like C and Fortran to Python, a language much easier to learn and use. Nearly every scientist working in Python draws on the power of NumPy.
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