Import psycopg2 Library not loaded: libssl.1.0.0.dylib

Question

When I try to run the command:

import psycopg2

I get the error:

ImportError: dlopen(/Users/gwulfs/anaconda/lib/python2.7/si         


        

Answer 1

Instead of playing with symlinks in system library dirs, set the $DYLD_FALLBACK_LIBRARY_PATH to include the anaconda libraries. eg:

export DYLD_FALLBACK_LIBRARY_PATH=$HOME/anaconda/lib/:$DYLD_FALLBACK_LIBRARY_PATH

Answer 2

I am using Mac OS Sierra: and got this error:

 Library not loaded: libssl.1.1.dylib

I found this library in

 /Library/PostgreSQL/11/lib

I found this solution in internet:

 export DYLD_LIBRARY_PATH=/Library/PostgreSQL/11/lib

But this is not a permanent solution. As I have to run the above command whenever I restart my server.

Add the line: export DYLD_LIBRARY_PATH=/Library/PostgreSQL//lib
to ~/.bash_profile

Answer 3

The solution that worked for me (https://stackoverflow.com/a/30726895 did not) was installing psycopg2-binary with: pip install psycopg2-binary==2.7.6

This is on MacOS Mohave.

Answer 4

I encountered this problem after running brew upgrade, which updated openssl from 1.0.0 to 1.1.1. That causes the error in the question because I'm using pyscopg 2.7.4, which is pinned to openssl@1.0. More recent versions of psycopg (>2.8) are pinned to openssl@1.1.

So your options in this situation are to upgrade your psycopg version to 2.8.1 or later (in your Pipfile/Pipfile.lock, etc.), or force brew to keep using openssl@1.0 with this command, taken from https://github.com/Homebrew/homebrew-core/issues/47348#issuecomment-560001981:

brew install https://raw.githubusercontent.com/Homebrew/homebrew-core/64555220bfbf4a25598523c2e4d3a232560eaad7/Formula/openssl.rb -f

Answer 5

brew reinstall openssl postgres did the trick for me

Answer 6

conda install psycopg works for me. It updates the following packages The following packages will be UPDATED:

conda:      3.19.1-py27_0 --> 4.0.5-py27_0
openssl:    1.0.2f-0      --> 1.0.2g-0
pip:        8.0.2-py27_0  --> 8.1.0-py27_0
setuptools: 19.6.2-py27_0 --> 20.2.2-py27_0
wheel:      0.26.0-py27_1 --> 0.29.0-py27_0