LangServe for API deployment in LangChain - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the LangServe class from langchain.servers.

LangChain

from langchain.servers import [1]

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

ALangServe

BLangChain

CServerAPI

DLangServer

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'LangChain' instead of 'LangServe'.

Using 'LangServer' which is incorrect.

The LangServe class is imported from langchain.servers to create API servers.

2fill in blank

medium

Complete the code to create a LangServe instance with a given chain named 'my_chain'.

LangChain

server = LangServe(chain=[1])

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

Aserver

Bmy_chain

Cchain

Dapi

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the string 'chain' instead of the variable.

Using 'server' which is the LangServe instance itself.

The LangServe instance requires the chain object to be passed as the 'chain' argument. Here, the chain is named 'my_chain'.

3fill in blank

hard

Fix the error in the code to start the LangServe API server.

LangChain

server.[1]()

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

Astart

Brun

Claunch

Dserve

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'run' or 'start' which are common but incorrect here.

The correct method to start the LangServe server is 'serve()'.

4fill in blank

hard

Fill both blanks to define a simple LangServe API with a chain and start it.

LangChain

from langchain.servers import [1]
server = [2](chain=my_chain)
server.serve()

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

ALangServe

BLangChain

CServerAPI

DLangServer

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing import and instance names.

Using 'LangChain' or 'LangServer' instead.

Both blanks require 'LangServe' to import the class and create its instance.

5fill in blank

hard

Fill all three blanks to create a LangServe server with a chain, specify a port, and start the server.

LangChain

from langchain.servers import [1]
server = [2](chain=my_chain, port=[3])
server.serve()

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

ALangServe

BLangChain

C8080

D5000

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong class names.

Choosing port 8080 which is valid but not the expected answer here.

Import and instantiate LangServe, then specify port 5000 to run the server on that port.