I have deployed my zipped project without psycopg2 package. I want to install this package on my lambda without re-uploading my fixed project (i haven't access to my project right now). How can i install this package on my lambda? Is it possible to do it with pip?
It's not possible to do with pip. You have to add the dependency to your zipped Lambda deployment file. You can't modify your Lambda deployment without uploading a new zipped deployment file.
Installing python package on AWS lambda