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pythonpython-3.xamazon-web-servicesaws-lambdapymongo

Unable to import module 'lambda_function': No module named 'pymongo'

I have followed this guide last year to build my AWS python archive and it was working.

Today i have automated my code deployment and it was not working (i am using shutil.make_archive("package", 'zip', root_dir=path, base_dir="package/", verbose=True) instead of the zip -r package.zip package/ command now.

But when i start doing all these steps manually again and deploy (without the automated code) it's not working anymore.

Here is what my folders look like :

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enter image description here

The only thing that has changed since the last time it was working is the pymongo version which was 3.12 instead of 4.3.3.

My handler is :

def lambda_handler(event, context):
    print(event)

The error i am getting from CloudWatch :

[ERROR] Runtime.ImportModuleError: Unable to import module 'lambda_function': No module named 'pymongo'
Traceback (most recent call last):

What am i doing wrong ?

EDIT :

I have found an old dependency package that is working, but that is using more than just pymongo[srv] so i will check what may be different but the error comes from the dependencies.

Solution

  • For lambda to find your external dependency, all your dependency must be inside audio-handler folder and not package. By default, lambda looks for dependency in the root directory.

    audio-handler
 |-bson
 |-pymongo
 .
 .
 .
 |-lambda_function.py

    Here is the video on how to create your deployment package and deploy it on aws lambda https://www.youtube.com/watch?v=Jtlxf_kn5zY