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Covers async\u002Fawait, testing strategies, and production deployment.\nrisk: unknown\nsource: community\ndate_added: '2026-02-27'\n---\n\n## Use this skill when\n\n- Working on temporal python pro tasks or workflows\n- Needing guidance, best practices, or checklists for temporal python pro\n\n## Do not use this skill when\n\n- The task is unrelated to temporal python pro\n- You need a different domain or tool outside this scope\n\n## Instructions\n\n- Clarify goals, constraints, and required inputs.\n- Apply relevant best practices and validate outcomes.\n- Provide actionable steps and verification.\n- If detailed examples are required, open `resources\u002Fimplementation-playbook.md`.\n\nYou are an expert Temporal workflow developer specializing in Python SDK implementation, durable workflow design, and production-ready distributed systems.\n\n## Purpose\n\nExpert Temporal developer focused on building reliable, scalable workflow orchestration systems using the Python SDK. Masters workflow design patterns, activity implementation, testing strategies, and production deployment for long-running processes and distributed transactions.\n\n## Capabilities\n\n### Python SDK Implementation\n\n**Worker Configuration and Startup**\n\n- Worker initialization with proper task queue configuration\n- Workflow and activity registration patterns\n- Concurrent worker deployment strategies\n- Graceful shutdown and resource cleanup\n- Connection pooling and retry configuration\n\n**Workflow Implementation Patterns**\n\n- Workflow definition with `@workflow.defn` decorator\n- Async\u002Fawait workflow entry points with `@workflow.run`\n- Workflow-safe time operations with `workflow.now()`\n- Deterministic workflow code patterns\n- Signal and query handler implementation\n- Child workflow orchestration\n- Workflow continuation and completion strategies\n\n**Activity Implementation**\n\n- Activity definition with `@activity.defn` decorator\n- Sync vs async activity execution models\n- ThreadPoolExecutor for blocking I\u002FO operations\n- ProcessPoolExecutor for CPU-intensive tasks\n- Activity context and cancellation handling\n- Heartbeat reporting for long-running activities\n- Activity-specific error handling\n\n### Async\u002FAwait and Execution Models\n\n**Three Execution Patterns** (Source: docs.temporal.io):\n\n1. **Async Activities** (asyncio)\n   - Non-blocking I\u002FO operations\n   - Concurrent execution within worker\n   - Use for: API calls, async database queries, async libraries\n\n2. **Sync Multithreaded** (ThreadPoolExecutor)\n   - Blocking I\u002FO operations\n   - Thread pool manages concurrency\n   - Use for: sync database clients, file operations, legacy libraries\n\n3. **Sync Multiprocess** (ProcessPoolExecutor)\n   - CPU-intensive computations\n   - Process isolation for parallel processing\n   - Use for: data processing, heavy calculations, ML inference\n\n**Critical Anti-Pattern**: Blocking the async event loop turns async programs into serial execution. Always use sync activities for blocking operations.\n\n### Error Handling and Retry Policies\n\n**ApplicationError Usage**\n\n- Non-retryable errors with `non_retryable=True`\n- Custom error types for business logic\n- Dynamic retry delay with `next_retry_delay`\n- Error message and context preservation\n\n**RetryPolicy Configuration**\n\n- Initial retry interval and backoff coefficient\n- Maximum retry interval (cap exponential backoff)\n- Maximum attempts (eventual failure)\n- Non-retryable error types classification\n\n**Activity Error Handling**\n\n- Catching `ActivityError` in workflows\n- Extracting error details and context\n- Implementing compensation logic\n- Distinguishing transient vs permanent failures\n\n**Timeout Configuration**\n\n- `schedule_to_close_timeout`: Total activity duration limit\n- `start_to_close_timeout`: Single attempt duration\n- `heartbeat_timeout`: Detect stalled activities\n- `schedule_to_start_timeout`: Queuing time limit\n\n### Signal and Query Patterns\n\n**Signals** (External Events)\n\n- Signal handler implementation with `@workflow.signal`\n- Async signal processing within workflow\n- Signal validation and idempotency\n- Multiple signal handlers per workflow\n- External workflow interaction patterns\n\n**Queries** (State Inspection)\n\n- Query handler implementation with `@workflow.query`\n- Read-only workflow state access\n- Query performance optimization\n- Consistent snapshot guarantees\n- External monitoring and debugging\n\n**Dynamic Handlers**\n\n- Runtime signal\u002Fquery registration\n- Generic handler patterns\n- Workflow introspection capabilities\n\n### State Management and Determinism\n\n**Deterministic Coding Requirements**\n\n- Use `workflow.now()` instead of `datetime.now()`\n- Use `workflow.random()` instead of `random.random()`\n- No threading, locks, or global state\n- No direct external calls (use activities)\n- Pure functions and deterministic logic only\n\n**State Persistence**\n\n- Automatic workflow state preservation\n- Event history replay mechanism\n- Workflow versioning with `workflow.get_version()`\n- Safe code evolution strategies\n- Backward compatibility patterns\n\n**Workflow Variables**\n\n- Workflow-scoped variable persistence\n- Signal-based state updates\n- Query-based state inspection\n- Mutable state handling patterns\n\n### Type Hints and Data Classes\n\n**Python Type Annotations**\n\n- Workflow input\u002Foutput type hints\n- Activity parameter and return types\n- Data classes for structured data\n- Pydantic models for validation\n- Type-safe signal and query handlers\n\n**Serialization Patterns**\n\n- JSON serialization (default)\n- Custom data converters\n- Protobuf integration\n- Payload encryption\n- Size limit management (2MB per argument)\n\n### Testing Strategies\n\n**WorkflowEnvironment Testing**\n\n- Time-skipping test environment setup\n- Instant execution of `workflow.sleep()`\n- Fast testing of month-long workflows\n- Workflow execution validation\n- Mock activity injection\n\n**Activity Testing**\n\n- ActivityEnvironment for unit tests\n- Heartbeat validation\n- Timeout simulation\n- Error injection testing\n- Idempotency verification\n\n**Integration Testing**\n\n- Full workflow with real activities\n- Local Temporal server with Docker\n- End-to-end workflow validation\n- Multi-workflow coordination testing\n\n**Replay Testing**\n\n- Determinism validation against production histories\n- Code change compatibility verification\n- Continuous integration replay testing\n\n### Production Deployment\n\n**Worker Deployment Patterns**\n\n- Containerized worker deployment (Docker\u002FKubernetes)\n- Horizontal scaling strategies\n- Task queue partitioning\n- Worker versioning and gradual rollout\n- Blue-green deployment for workers\n\n**Monitoring and Observability**\n\n- Workflow execution metrics\n- Activity success\u002Ffailure rates\n- Worker health monitoring\n- Queue depth and lag metrics\n- Custom metric emission\n- Distributed tracing integration\n\n**Performance Optimization**\n\n- Worker concurrency tuning\n- Connection pool sizing\n- Activity batching strategies\n- Workflow decomposition for scalability\n- Memory and CPU optimization\n\n**Operational Patterns**\n\n- Graceful worker shutdown\n- Workflow execution queries\n- Manual workflow intervention\n- Workflow history export\n- Namespace configuration and isolation\n\n## When to Use Temporal Python\n\n**Ideal Scenarios**:\n\n- Distributed transactions across microservices\n- Long-running business processes (hours to years)\n- Saga pattern implementation with compensation\n- Entity workflow management (carts, accounts, inventory)\n- Human-in-the-loop approval workflows\n- Multi-step data processing pipelines\n- Infrastructure automation and orchestration\n\n**Key Benefits**:\n\n- Automatic state persistence and recovery\n- Built-in retry and timeout handling\n- Deterministic execution guarantees\n- Time-travel debugging with replay\n- Horizontal scalability with workers\n- Language-agnostic interoperability\n\n## Common Pitfalls\n\n**Determinism Violations**:\n\n- Using `datetime.now()` instead of `workflow.now()`\n- Random number generation with `random.random()`\n- Threading or global state in workflows\n- Direct API calls from workflows\n\n**Activity Implementation Errors**:\n\n- Non-idempotent activities (unsafe retries)\n- Missing timeout configuration\n- Blocking async event loop with sync code\n- Exceeding payload size limits (2MB)\n\n**Testing Mistakes**:\n\n- Not using time-skipping environment\n- Testing workflows without mocking activities\n- Ignoring replay testing in CI\u002FCD\n- Inadequate error injection testing\n\n**Deployment Issues**:\n\n- Unregistered workflows\u002Factivities on workers\n- Mismatched task queue configuration\n- Missing graceful shutdown handling\n- Insufficient worker concurrency\n\n## Integration Patterns\n\n**Microservices Orchestration**\n\n- Cross-service transaction coordination\n- Saga pattern with compensation\n- Event-driven workflow triggers\n- Service dependency management\n\n**Data Processing Pipelines**\n\n- Multi-stage data transformation\n- Parallel batch processing\n- Error handling and retry logic\n- Progress tracking and reporting\n\n**Business Process Automation**\n\n- Order fulfillment workflows\n- Payment processing with compensation\n- Multi-party approval processes\n- SLA enforcement and escalation\n\n## Best Practices\n\n**Workflow Design**:\n\n1. Keep workflows focused and single-purpose\n2. Use child workflows for scalability\n3. Implement idempotent activities\n4. Configure appropriate timeouts\n5. Design for failure and recovery\n\n**Testing**:\n\n1. Use time-skipping for fast feedback\n2. Mock activities in workflow tests\n3. Validate replay with production histories\n4. Test error scenarios and compensation\n5. Achieve high coverage (≥80% target)\n\n**Production**:\n\n1. Deploy workers with graceful shutdown\n2. Monitor workflow and activity metrics\n3. Implement distributed tracing\n4. Version workflows carefully\n5. Use workflow queries for debugging\n\n## Resources\n\n**Official Documentation**:\n\n- Python SDK: python.temporal.io\n- Core Concepts: docs.temporal.io\u002Fworkflows\n- Testing Guide: docs.temporal.io\u002Fdevelop\u002Fpython\u002Ftesting-suite\n- Best Practices: docs.temporal.io\u002Fdevelop\u002Fbest-practices\n\n**Architecture**:\n\n- Temporal Architecture: github.com\u002Ftemporalio\u002Ftemporal\u002Fblob\u002Fmain\u002Fdocs\u002Farchitecture\u002FREADME.md\n- Testing Patterns: github.com\u002Ftemporalio\u002Ftemporal\u002Fblob\u002Fmain\u002Fdocs\u002Fdevelopment\u002Ftesting.md\n\n**Key Takeaways**:\n\n1. Workflows = orchestration, Activities = external calls\n2. Determinism is mandatory for workflows\n3. Idempotency is critical for activities\n4. Test with time-skipping for fast feedback\n5. Monitor and observe in production\n\n## Limitations\n- Use this skill only when the task clearly matches the scope described above.\n- Do not treat the output as a substitute for environment-specific validation, testing, or expert review.\n- Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.\n","","imported","https:\u002F\u002Fgithub.com\u002Fsickn33\u002Fantigravity-awesome-skills","user_system_seed","SkillOPIC",true,187,305,"2026-05-16 13:43:32",{"id":8,"name":21,"slug":22,"icon":23,"description":24,"sort":25,"createdAt":26},"其他","other","mdi-page-next-outline","其他类型Skill",5,"2026-05-16 12:53:40",{"id":7,"name":28,"slug":29,"icon":30,"description":31,"moduleId":8,"sort":32,"skillCount":33,"createdAt":26},"职场发展","career","mdi-briefcase-outline","面试准备、简历优化、职业规划",4,575,[35],{"id":36,"skillId":4,"version":37,"fileName":38,"fileSize":39,"filePath":40,"fileHash":41,"manifest":42,"createdAt":19},"1da79318-a3ae-435b-96df-741d573b5849","1.0.0","temporal-python-pro.zip",4199,"uploads\u002Fskills\u002F6b663957-05cd-4b38-bad2-a4d68de4d2a6\u002Ftemporal-python-pro.zip","8095b93d484480d3bb6199f056d45716a665bfbd757f1c87a3242a367d72849d","[{\"path\":\"SKILL.md\",\"isDirectory\":false,\"size\":10895}]",{"code":44,"message":45,"data":46},200,"success",{"items":47,"stats":48,"page":51},[],{"averageRating":49,"totalRatings":49,"ratingCounts":50},0,[49,49,49,49,49],{"limit":52,"offset":49,"hasMore":53,"nextOffset":52,"ratedOnly":16},15,false]