AWS lambda 的 python 运行时 3.7 使用运行时层 3.6

Question

I have the following:
1. AWS (lambda) layer of runtime python 3.6.
2. A lambda function of runtime python 3.7 that uses the above layer.

The layer packages it's modules in a zip with the required hierarhcy of "python/lib/python3.6/site-packages" .

The problem is that the lambda function does not find (ie fails to import) the layer modules, unless I explicitly do something like: sys.path.append('/opt/python/lib/python3.6/site-packages') , which I feel is a workaround.

I would expect aws lambda framework to smoothly allow a 3.7 runtime to import modules from a layer with version < 3.7. (by adding the matching python path or by some other way).

Is there such a way that I missed?

Thanks.

Answer 1

This layer hierarchy python/lib/python3.6/site-packages is not needed. You could just do pip install xxx -t folder , zip it, upload it, and set an PYTHONPATH=/opt environment variable.