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I followed the following steps to create a layer to use in my AWS Lambda function.

  1. Downloaded the pyarrow library to python folder using the following command

    pip install pyarrow==5.0.0 -t python

  2. Then recursively zipped the python folder

    zip -r pyarrow.zip python/

  3. Uploaded the zipped file using the AWS Lambda UI and successfully created a layer.

  4. Added the layer to my lambda function.

However when I try to import pyarrow I get the following error.

[ERROR] Runtime.ImportModuleError: Unable to import module 'lambda_function': No module named 'pyarrow.lib'

I downloaded the the zip file. I can see the pyarrow folder in it. But for some reason Lambda can't find the pyarrow. Any suggestions or advice where I could have made a mistake?

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    Double-check that you followed the packaging instructions. Commented Feb 17, 2022 at 19:25

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Assume your code is in "function_code" folder in some path

  1. pip install pyarrow==5.0.0 -t function_code/
  2. cd function_code
  3. zip -r funcition_code.zip * (you should not zip the folder but only its contents)
  4. Upload the zip
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I had the same problem and I was able to resolve it by reading the medium article in the accepted answer for this question: numpy error when importing pandas with AWS Lambda

So, I used the *manylinux1_x86_64.whl package for pyarrow instead of numpy and pandas

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