Solution:Step 1: Understand invoke() on RunnableParallelinvoke() runs all tasks in parallel and returns their outputs as a list in the same order.Step 2: Analyze the code's outputSince two tasks are passed, results will be a list with both outputs, matching A list with outputs of taskA and taskB in

[Solved] Given the code:parallel = RunnableParallel([taskA, taskB]) results = parallel.invoke() print(results)What will results contain? | LangChain

LangChain - Chains and LCEL

Given the code:

parallel = RunnableParallel([taskA, taskB])
results = parallel.invoke()
print(results)

What will results contain?

AA list with outputs of taskA and taskB in order

BA single output from taskA only

CAn error because invoke() needs arguments

DA dictionary with task names as keys

Step-by-Step Solution

Solution:

Step 1: Understand invoke() on RunnableParallel
invoke() runs all tasks in parallel and returns their outputs as a list in the same order.
Step 2: Analyze the code's output
Since two tasks are passed, results will be a list with both outputs, matching A list with outputs of taskA and taskB in order.
Final Answer:
A list with outputs of taskA and taskB in order -> Option A
Quick Check:
invoke() returns list of results [OK]

Quick Trick: invoke() returns list of all task outputs in order [OK]

Common Mistakes:

Expecting a single output instead of a list
Thinking invoke() requires extra arguments
Assuming output is a dictionary

Master "Chains and LCEL" in LangChain

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Visual Try Challenge Project Recall Perf

More LangChain Quizzes

Given the code:

Step 1: Understand invoke() on RunnableParallel

Step 2: Analyze the code's output

Final Answer:

Quick Check:

Want More Practice?