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Updated readme file for instructions on how to package properly for a… #75

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Updated readme file for instructions on how to package properly for a… #75

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9 changes: 7 additions & 2 deletions README.md
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Expand Up @@ -11,8 +11,13 @@ libpq library instead of the default dynamic link.
#### Python2.*
Just copy the psycopg2 directory into your AWS Lambda zip package.

#### Python 3.6
Just copy the psycopg2-3.6 directory into your AWS Lambda project and rename it to psycopg2 before creating your AWS Lambda zip package.
#### Python 3.9
When creating a lambda layer for deployment or packaging to be used as an import, follow these steps:
1. Create the following directory tree, if building for python3.6, otherwise replace ‘python3.9’ with the version choice:
2. `mkdir -p python/lib/python3.9/site-packages/psycopg2`
3. Choose the python version of interest and copy the files from the folders downloaded in step 1. to the directory tree in step 2. e.g. if building a layer for python 3.9: `cp psycopg2-3.9/* python/lib/python3.9/site-packages/psycopg2`
4. Create the zip file for the layer. e.g.: zip -r9 psycopg2-py39.zip python
5. Create a layer in the console or cli and upload the zip

### Instructions on compiling this package from scratch

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