# Python SDK

This is the generated API reference for the Hatchet Python SDK. For concepts and guides, see the [user guide](/v1).

## Core pages

- [Client](/reference/python/client): The main Hatchet client, its configuration, and the feature client accessors
- [Context](/reference/python/context): The context object passed to tasks at runtime
- [Runnables](/reference/python/runnables): Tasks and workflows, the objects you register on workers and run

## Feature clients

Feature clients are available as properties on the [client](/reference/python/client), and each covers one area of the Hatchet API. The Guide column links to the user guide page for the feature.

Client, Description, Guide

[CEL](/reference/python/feature-clients/cel), Evaluate and debug CEL expressions used in event filters and concurrency keys
[Crons](/reference/python/feature-clients/cron), Create and manage cron triggers that run workflows on a schedule, [Cron Runs](/v1/cron-runs)
[Filters](/reference/python/feature-clients/filters), Manage event filters that scope which events trigger runs, [Events](/v1/events)
[Logs](/reference/python/feature-clients/logs), Read logs written by task runs, [Logging](/v1/logging)
[Metrics](/reference/python/feature-clients/metrics), Read queue depths, task status counts, and tenant Prometheus metrics, [Prometheus Metrics](/v1/prometheus-metrics)
[Rate Limits](/reference/python/feature-clients/rate_limits), Create and inspect rate limits that control task throughput, [Rate Limits](/v1/rate-limits)
[Runs](/reference/python/feature-clients/runs), Get, replay, cancel, and inspect workflow runs and their results, [Running Tasks](/v1/running-your-task)
[Scheduled Runs](/reference/python/feature-clients/scheduled), Schedule workflow runs for a specific future time, [Scheduled Runs](/v1/scheduled-runs)
[Stubs](/reference/python/feature-clients/stubs), Create typed stubs for tasks and workflows registered in another service, [Inter-Service Triggering](/v1/inter-service-triggering)
[Webhooks](/reference/python/feature-clients/webhooks), Manage incoming webhooks that trigger runs from external services, [Webhooks](/v1/webhooks)
[Workers](/reference/python/feature-clients/workers), List workers and manage their state, [Workers](/v1/workers)
[Workflows](/reference/python/feature-clients/workflows), List and manage registered workflow definitions, [Tasks](/v1/tasks)

## Python specifics

- [asyncio](/reference/python/asyncio): Working with asyncio in the Python SDK
- [pydantic](/reference/python/pydantic): Validating task inputs and outputs with Pydantic models
- [lifespans](/reference/python/lifespans): Sharing state like connections and clients across tasks on a worker
- [dependency-injection](/reference/python/dependency-injection): Injecting dependencies into tasks
- [dataclasses](/reference/python/dataclasses): Using dataclasses as task input and output types