Supercharge your Python code with Blocks
summary
Prefect blocks store reusable configuration as Python objects that are create via GUI or Python, expose code snippets for consumption, and persist on a server (default SQLite, Postgres or Prefect Cloud). Secrets are encrypted at rest and values are obfuscated in the UI. Built-in blocks include AWS S3 block for remote code and notification blocks (Slack, email, webhooks); custom blocks subclass a base class and register via the CLI. Adoption is real — Prefect reports two billion task runs and production usage across deployments.
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chapters (29)
- 0:00Python Blocks intro
- 1:51What are Prefect Blocks
- 2:54Blocks benefits
- 3:58Where Blocks stored
- 4:41Blocks as connectors
- 5:22Creating Prefect Blocks
- 7:26Secure config sharing
- 9:34Blocks history
- 12:03Python and Streamlit
- 13:50Prefect origins
- 14:55Built-in Block types
- 16:42AWS S3 Block
- 17:25Notification Blocks
- 18:29Extending with libraries
- 19:11Custom Blocks creation
- 20:14CLI for Blocks
- 20:56Blocks in practice
- 21:58Blocks in Prefect
- 22:39Reuse and sharing
- 23:00Why Prefect for flows
- 24:45Adopting Prefect
- 25:49Notifications and retries
- 26:11Prefect Cloud overview
- 27:12Blocks as multipliers
- 28:37When to use Blocks
- 29:40Q&A: Expiration & deps
- 31:45Real-world Block uses
- 33:53Why call them Blocks
- 35:17Q&A: Block limits
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