Parallel execution with RunnableParallel in LangChain - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a RunnableParallel instance with two runnables.

LangChain

from langchain.schema.runnable import Runnable
from langchain.schema.runnable.parallel import RunnableParallel

runnable1 = Runnable()
runnable2 = Runnable()
parallel = RunnableParallel([1])

Drag options to blanks, or click blank then click option'

Arunnable1, runnable2

Brunnable1=runnable1, runnable2=runnable2

C(runnable1, runnable2)

D{runnable1, runnable2}

Attempts:

3 left

💡 Hint

Common Mistakes

Using square brackets for list syntax.

Passing runnables separated by commas without keyword names.

The RunnableParallel constructor expects keyword arguments mapping names to runnables, so we pass runnable1=runnable1, runnable2=runnable2.

2fill in blank

medium

Complete the code to run the RunnableParallel instance with input 'data'.

LangChain

result = parallel.[1]('data')

Drag options to blanks, or click blank then click option'

Aexecute

Brun

Cinvoke

Dinvoke_async

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'run' or 'execute' which are not methods of RunnableParallel.

Using 'invoke_async' which is for asynchronous calls.

The RunnableParallel class uses the invoke method to execute all runnables in parallel and collect their results.

3fill in blank

hard

Fix the error in the code to run RunnableParallel asynchronously.

LangChain

import asyncio

async def main():
    result = await parallel.[1]('input')
    print(result)

asyncio.run(main())

Drag options to blanks, or click blank then click option'

Aainvoke

Brun

Cexecute_async

Dasync_run

Attempts:

3 left

💡 Hint

Common Mistakes

Using synchronous methods with await causing errors.

Using method names that do not exist in RunnableParallel.

To run RunnableParallel asynchronously, use the ainvoke method with await.

4fill in blank

hard

Fill both blanks to create a RunnableParallel that runs two different runnables and run it synchronously.

LangChain

r1 = Runnable()
r2 = Runnable()
parallel = RunnableParallel([1]=r1, [2]=r2)
output = parallel.[3]('test input')

Drag options to blanks, or click blank then click option'

Ar1

Br2

Cinvoke

Dexecute

Attempts:

3 left

💡 Hint

Common Mistakes

Passing runnables without kwarg syntax or with wrong syntax.

Using 'execute' which is not a RunnableParallel method.

We pass the two runnable instances r1 and r2 as keyword arguments to RunnableParallel, then call invoke to execute synchronously.

5fill in blank

hard

Fill all three blanks to create a RunnableParallel, run it asynchronously, and print the result.

LangChain

import asyncio

r1 = Runnable()
r2 = Runnable()
parallel = RunnableParallel([1]=r1, [2]=r2)

async def main():
    result = await parallel.[3]('async input')
    print(result)

asyncio.run(main())

Drag options to blanks, or click blank then click option'

Ar1

Br2

Cainvoke

Drun

Attempts:

3 left

💡 Hint

Common Mistakes

Using synchronous invoke method with await causing errors.

Passing runnables without kwarg syntax.

We create RunnableParallel with r1 and r2 as kwargs, then use ainvoke awaited inside an async function to run asynchronously.