Strategy Startup Guardrails

Quick Checklist (before launch)

• Imports: avoid shadowing time ; use from datetime import time as dt_time and import time as time_module for timestamps.

• Market hours helpers: call dt_time(...) , not time(...) if time is a module.

• Config/env: confirm OPENALGO_APIKEY , broker creds, and host/port.

• Data readiness: master contracts downloaded for required exchanges/symbols.

• History preflight: run one manual history request with real payload (see history-payload-validator ).

Fast Triage Steps

• Read the latest strategy log for the traceback.

• If TypeError: 'module' object is not callable , search for time( with a module import: rg "import time" openalgo/strategies | head rg "time\(" openalgo/strategies/scripts

Ensure you call dt_time(...) for market hours and time_module.time() for timestamps.

• If crash happens before first request, check missing env vars or config JSON.

• If crash is on history fetch, switch to history-payload-validator .

• Restart only after the above checks pass.

Safe Patterns

• Import pattern: from datetime import time as dt_time import time as time_module

use dt_time(9, 15); use time_module.time()

• Guard market hours: if not is_market_open(): logger.info("Market closed; exiting") return

• Validate dependencies at start: raise clear errors if env/config is missing.

Post-Fix Verification

• Rerun the strategy and ensure logs show:

• Startup banner

• Successful history fetch

• No immediate traceback within the first minute

• Keep tailing logs for 2–3 minutes after restart to confirm stability.