ImportError: No module named langchain.llms

Question

I used the following import statetement:

from langchain.llms import OpenAI 

And I am getting the following error:

pycode python main.py Traceback (most recent call last): File "main.py", line 1, in from langchain.llms import openai ImportError: No module named langchain.llms

I am using Python 3.11.6 and I installed the packages using

pip3 install openai langchain

Answer 1

Install langchain_community by using this command in the terminal:

pip install -U langchain-community

After this, import it as:

from langchain_community.llms import OpenAI 

This worked for me.

Answer 2

Issue experienced in VSCode, is probably a conflict based on having more than virtualenv from different interpreters. I went for Global interpreter, since probably having more than 1 does not help much (Python 3.12.7 (in my local machine this was the Global interpreter), Python 3.12.2 etc) in VSCode.

Choose based on your preference. I chose the intepreter I use in my repl. Run the below to see what version it is you have.

$py

Output:

Python 3.12.7 (tags/v3.12.7:0b05ead, Oct 1 2024, 03:06:41) [MSC v.1941 64 bit (AMD64)] on win32 Type "help", "copyright", "credits" or "license" for more information.

Then what solved my issue was deleting my python venv:

$deactivate

If your virtual environment is in a directory called 'venv':

$rm -r venv

create a new one, and if possible (meaning it is not necessary), have a prefix-venv name based on your project to avoid confusion.

$python -m venv mySecondProjectVenV

Answer 3

it works with

Version: 0.0.274

the latest langchain version is 0.0.320 and try to import like this:

from langchain.llms.openai import OpenAI

Maybe your python version installed an early verison of langchain due to dependency requirements