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Use the Kernel Python SDK when you need to:

Zarr is a Python library for storing large N-dimensional arrays with chunking and compression. Apply this skill for efficient parallel I/O, cloud-native workflows, and seamless integration with NumPy, Dask, and Xarray.

Comprehensive pytest testing strategies with TDD, fixtures, mocking, and coverage best practices. \n \n Covers TDD methodology (red-green-refactor cycle), parametrization, fixtures with multiple scopes, and mocking patterns for unit and integration testing \n Includes pytest fundamentals: assertions, markers for test selection, exception testing, and async test support with pytest-asyncio \n Provides practical patterns for testing APIs, databases, file operations, and class methods with real cod

Standards and best practices for Python development. Follow these guidelines when writing or modifying Python code.

Generate production-ready Python code for Dataverse SDK with error handling and best practices. \n \n Implements comprehensive error handling using DataverseError hierarchy with retry logic and exponential backoff for transient failures \n Enforces singleton client pattern for connection management and includes structured logging for audit trails and debugging \n Applies OData optimization techniques: server-side filtering, column selection, and pagination to reduce data transfer \n Provides typ

Pytest-based testing strategies for Temporal workflows with time-skipping, mocking, and replay validation. \n \n Covers unit testing (WorkflowEnvironment with time-skipping), integration testing (mocked activities), and replay testing for determinism validation \n Time-skipping enables month-long workflows to execute in seconds; ActivityEnvironment isolates activity logic for fast feedback \n Includes progressive disclosure resources for unit testing, integration testing, replay testing, and loc

Automatic retries, exponential backoff, timeouts, and fault-tolerant decorators for Python services. \n \n Covers transient vs. permanent failure classification, exponential backoff with jitter, bounded retries, and timeout patterns using the tenacity library \n Includes nine production patterns: basic retry, selective error handling, HTTP status code retries, combined exception and status retries, retry logging, timeout decorators, stacked decorators, dependency injection for testing, and fail-

Comprehensive testing strategies for Python using pytest, fixtures, mocking, and test-driven development. \n \n Covers unit, integration, functional, and performance testing with the AAA pattern (Arrange, Act, Assert) for test structure \n Includes 10 fundamental and advanced patterns: basic tests, fixtures with setup/teardown, parameterization, mocking, exception handling, async testing, monkeypatching, temporary files, custom fixtures, and property-based testing \n Provides test design princip

Async task processing patterns for decoupling long-running work from request/response cycles. \n \n Covers core patterns including immediate job ID returns, task queue configuration with Celery, idempotency strategies, and job state management for visibility \n Includes advanced workflows: dead letter queues for failed tasks, status polling endpoints, task chaining, and parallel execution \n Provides examples for Celery, RQ, and Dramatiq, plus guidance on cloud-native alternatives like AWS SQS a

Deterministic resource management with context managers, cleanup patterns, and streaming state accumulation. \n \n Covers class-based and decorator-based context managers for sync and async resources, with unconditional cleanup guarantees even on exceptions \n Includes patterns for database connections, file handles, connection pools, and dynamic resource management via ExitStack \n Provides streaming response patterns with efficient state accumulation, metrics tracking, and time-to-first-byte m