is now enabled by default for all Vercel Functions using the , completing the rollout plan . Python functions can now send data to the client as it’s generated, rather than waiting for the entire response—particularly beneficial for use cases like AI applications and real-time updates.StreamingPython runtimeannounced last year The environment variable is no longer necessary, as streaming is now applied automatically in your new deployments.VERCEL_FORCE_PYTHON_STREAMING With streaming responses, the runtime log format and frequency have been updated.

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