[Solved] Find the error in this delivery agent assignment snippet:def assign_agent(order, agents): free_agents = [a for a in agents if a.status == "free"] return free_agents[0].id | LLD

LLD - Design — Food Delivery System

Find the error in this delivery agent assignment snippet:

def assign_agent(order, agents):
   free_agents = [a for a in agents if a.status == "free"]
   return free_agents[0].id

AReturns agent object instead of ID

BList comprehension syntax is incorrect

CNo check if free_agents list is empty before accessing index 0

DFilters agents by busy status instead of free

Step-by-Step Solution

Solution:

Step 1: Analyze list comprehension
It correctly filters free agents.
Step 2: Check access to first element
If no free agents, accessing free_agents[0] causes an error.
Final Answer:
No check if free_agents list is empty before accessing index 0 -> Option C
Quick Check:
Check list length before access [OK]

Quick Trick: Always check list is not empty before indexing [OK]

Common Mistakes:

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Find the error in this delivery agent assignment snippet: