Unable to import module 'lambda_function': No module named 'netCDF4'

Question

I am trying to create a lambda function that uses netCDF4. Unfortunately it seems netCDF4 is not supported in AWS. Is there a way to use netCDF4 in AWS?

Update: I created the zip file, however another module is missing (netCDF4._netCDF4) within the module I originally created the zip file for. Has anyone actually used specifically netCDF4 in a lambda function? Thanks in advance!

Marcin · Accepted Answer · 2021-06-18 02:13:47Z

1

Is there a way to use netCDF4 in AWS?

Yes. There are three options for you:

Bundle your netCDF4 with your lambda zip package.
Create lambda layer with netCDF4
Use container lambda which comprises of your entire codebase including all dependencies.

answered Jun 18, 2021 at 2:13

Marcin

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13 Comments

Arec Over a year ago

After creating the zip for netCDF4, another module appears to be missing. Here is the error: { "errorMessage": "Unable to import module 'lambda_function': No module named 'netCDF4._netCDF4'", "errorType": "Runtime.ImportModuleError", "stackTrace": [] }

Marcin Over a year ago

@Arec Just create container lambda. This is the easiest way to handle lambda dependencies. Everything else is more complex to handle.

Arec Over a year ago

Honestly it seems more complex than the first option. I am still new to AWS, but I appreciate your help. I feel like I did everything correctly with the first option (which I just watched a YouTube video since I find it easier to follow along), but some how another module is missing.

Marcin Over a year ago

@Arec Doesn't netCDF4 depend on C libraries as well? AWS lambda will not have them either.

Arec Over a year ago

When I pip install netCDF4, in the netCDF directory, _netCDF4.cp39-win_amd64.pyd is the only thing that is close to the _netCDF4 that is missing. Is this file related to the issue?

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