Average Outage Duration Function | Dataford Interview Questions

Given a dataset of power outage events, write a Python function to calculate the average duration of outages per region, handling missing or malformed timestamps at PG&E.

Use the signature def average_outage_duration(events):. Each event is a dictionary with region, start_time, and end_time strings. Parse ISO 8601 timestamps, skip events with missing or malformed timestamps, and ignore events whose end precedes their start. Return a dictionary mapping each region with at least one valid event to its average duration in minutes, rounded to two decimal places.

Constraints

0 <= len(events) <= 10^5
Each event is a dictionary containing region, start_time, and end_time keys, though values may be missing or malformed
Timestamps use ISO 8601 format when valid
Durations are returned in minutes and rounded to two decimal places
Events with negative durations do not contribute to any average

Function Signature

def average_outage_duration(events):

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Problem

Given a dataset of power outage events, write a Python function to calculate the average duration of outages per region, handling missing or malformed timestamps at PG&E.

Constraints

0 <= len(events) <= 10^5
Each event is a dictionary containing region, start_time, and end_time keys, though values may be missing or malformed
Timestamps use ISO 8601 format when valid
Durations are returned in minutes and rounded to two decimal places
Events with negative durations do not contribute to any average

Function Signature

def average_outage_duration(events):

Your question is Average Outage Duration Function. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.