AWS Lambda - 上传的依赖项不加载依赖项的依赖项

Question

I've looked around but have had a hard time finding someone with a similar problem. Most of the articles I come across have a hard time deploying a package. My problem is that the package I uploaded has a hard time finding its resources.

For more context: I am using python3, I have used both RedHat 7 and Windows 10 to follow these instructions to create the layer I need, and I have successfully been able to follow them to create a layer and import it into my lambda_function.py file. The module I am trying to import is called qrcode . When the virtual environment is activated, I installed it with pip install qrcode[pil] on Windows 10 and pip3 install qrcode[pil] on my RedHat 7 ec2 instance. I have also tried to include a separate layer for pil itself, to which it still didn't work.

The error: The stacktrace is as follows -

{
  "errorMessage": "No module named 'Image'",
  "errorType": "ModuleNotFoundError",
  "stackTrace": [
    "  File \"/var/task/lambda_function.py\", line 30, in lambda_handler\n    img = qrcode.make(data)\n",
    "  File \"/opt/python/qrcode/main.py\", line 13, in make\n    return qr.make_image()\n",
    "  File \"/opt/python/qrcode/main.py\", line 296, in make_image\n    from qrcode.image.pil import PilImage\n",
    "  File \"/opt/python/qrcode/image/pil.py\", line 7, in <module>\n    import Image\n"
  ]
}

Answer 1

I got it to work, though I'm not 100% pleased with the answer.

Long story short, qrcode had an issue importing PIL. I came across this answer that talked about how lambda is missing some components in how it was built. So I installed my package ( pip install qrcode ) and imported it as a layer, then I used an arn specific for pil (talked about here ), and it worked like a charm.