Solution:Step 1: Understand RunnableParallel output orderRunnableParallel returns a dict with results in the order keys are defined.Step 2: Match task results to output dicttaskA under 'taskA' returns 'Hello' first, taskB under 'taskB' returns 'World' second, so {'taskA': 'Hello', 'taskB': 'World'}.

[Solved] Given the code:parallel = RunnableParallel({"taskA": taskA, "taskB": taskB}) results = parallel.invoke() print(results)If taskA returns 'Hello' and taskB returns 'World', what will be printed? | LangChain

LangChain - Chains and LCEL

Given the code:

parallel = RunnableParallel({"taskA": taskA, "taskB": taskB})
results = parallel.invoke()
print(results)

If taskA returns 'Hello' and taskB returns 'World', what will be printed?

A{'taskB': 'World', 'taskA': 'Hello'}

B['HelloWorld']

C'Hello World'

D{'taskA': 'Hello', 'taskB': 'World'}

Step-by-Step Solution

Solution:

Step 1: Understand RunnableParallel output order
RunnableParallel returns a dict with results in the order keys are defined.
Step 2: Match task results to output dict
taskA under 'taskA' returns 'Hello' first, taskB under 'taskB' returns 'World' second, so {'taskA': 'Hello', 'taskB': 'World'}.
Final Answer:
{'taskA': 'Hello', 'taskB': 'World'} -> Option D
Quick Check:
Order of results matches dict definition order [OK]

Quick Trick: Results dict order matches task definition order [OK]

Common Mistakes:

Reversing the order of task results
Thinking results are combined into one string
Expecting a list instead of dict output

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Given the code:

Step 1: Understand RunnableParallel output order

Step 2: Match task results to output dict

Final Answer:

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