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Python Preflight Bug Fix Stops False Positive in Completed-Call Counter

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A developer identified and fixed a logic bug in a Python component where a diagnostic counter incorrectly returned 1 even when a preflight check failed and the main operation was never executed. The root cause was a hard-coded return value of 1 that did not account for exception-handling paths. The fix restructures the function to return 0 directly when an exception is caught, and return 1 only when both the preflight and operation complete successfully. The correction was validated through before-and-after replay tests, normal and optimized Python execution modes, and in-memory compilation checks. The fix ensures the invariant that a preflight exception always results in a completed-call count of zero, eliminating false positives in diagnostics.

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Python Preflight Bug Fix Stops False Positive in Completed-Call Counter · ShortSingh