问题
When I try to run the command:
import psycopg2
I get the error:
ImportError: dlopen(/Users/gwulfs/anaconda/lib/python2.7/site-packages/psycopg2/_psycopg.so, 2): Library not loaded: libssl.1.0.0.dylib
Referenced from: /Users/gwulfs/anaconda/lib/python2.7/site-packages/psycopg2/_psycopg.so
Reason: image not found
So far I have tried brew install openssl and have referenced (with no luck):
psycopg2 installation error - Library not loaded: libssl.dylib
http://joshuakehn.com/2013/10/13/Postgresapp-and-psycopg2-on-OS-X.html
Psycopg2 image not found
回答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
回答2:
EDIT: potentially dangerous, read comments first!
See a much safer answer below: https://stackoverflow.com/a/30726895/308315
I ran into this exact issue about an hour after you posted it and just figured it out. I am using Mac OS X Yosemite, Python 2.7, and the Postgresql app.
There seems to be a non-working symlink set by default (or I introduced it while troubleshooting), to fix it first remove the incorrect links:
$ sudo rm /usr/lib/libssl.1.0.0.dylib
$ sudo rm /usr/lib/libcrypto.1.0.0.dylib
Then re-link them with (replace YOURUSERNAME with your Mac user name. I found it helpful to use tab to complete each step, to confirm the directory):
$ sudo ln -s /Users/YOURUSERNAME/anaconda/lib/libssl.1.0.0.dylib /usr/lib
$ sudo ln -s /Users/YOURUSERNAME/anaconda/lib/libcrypto.1.0.0.dylib /usr/lib
I believe the other solutions didn't work for you because your version is in anaconda.
回答3:
After bashing my head against the wall for a couple hours, these two solutions are guaranteed to work:
Option 1. This solves our problem without messing around with environment variables. Run this in your shell:
brew install --upgrade openssl
brew unlink openssl && brew link openssl --force
Boom! This upgrades the symbolic links in /usr/local for libssl and libcrypto. Now import psycopg2 works like a charm.
Option 2. If for some reason you would like to maintain the current symbolic links in usr/local, run this command in your shell:
export DYLD_FALLBACK_LIBRARY_PATH=$HOME/anaconda/lib/:$DYLD_FALLBACK_LIBRARY_PATH
Just make sure to replace $HOME/anaconda/lib above with the actual lib path. In my case, this was $HOME/miniconda2/envs/ali/lib.
This will only work for the shell/bash session you're currently in. To make the change persistent, add the export statement to your ~/.bash_profile or ~/.bashrc file.
Thoughts: IMO #1 is the proper way to deal with this problem, but I left #2 in case some people prefer working with environment variables rather than fixing symbolic links (if, for example, they have software with a dependency on the older openssl file versions).
回答4:
After Homebrew wouldn't allow me to force link openssl the following worked fine:
pip install --global-option=build_ext \
--global-option="-I/usr/local/opt/openssl/include" \
--global-option="-L/usr/local/opt/openssl/lib" psycopg2
(this installation succeeded in a virtualenv on macOS)
回答5:
conda install psycopg works for me. It updates the following packages The following packages will be UPDATED:
conda: 3.19.1-py27_0 --> 4.0.5-py27_0
openssl: 1.0.2f-0 --> 1.0.2g-0
pip: 8.0.2-py27_0 --> 8.1.0-py27_0
setuptools: 19.6.2-py27_0 --> 20.2.2-py27_0
wheel: 0.26.0-py27_1 --> 0.29.0-py27_0
回答6:
In relation to X.L.'s answer above, I didn't want to use Anaconda when I'm already using pip, so I just gave it the path to the Postgres libraries which worked for me (I'm using PostgreSQL.app on Mac OS 10.10)...
export DYLD_FALLBACK_LIBRARY_PATH=/Library/PostgreSQL/9.5/lib:$DYLD_FALLBACK_LIBRARY_PATH
回答7:
I had to vary Scott Brennstuhl's answer a little: 1. Remove broken symlinks:
$ sudo rm /usr/lib/libssl.1.0.0.dylib
$ sudo rm /usr/lib/libcrypto.1.0.0.dylib
$ sudo rm /usr/lib/libpq.5.dylib
- Relink with postgres' included drivers:
$ sudo ln -s /Applications/Postgres.app/Contents/Versions/9.4/lib/libssl.1.0.0.dylib /usr/lib
$ sudo ln -s /Applications/Postgres.app/Contents/Versions/9.4/lib/libcrypto.1.0.0.dylib /usr/lib
$ sudo ln -s /Applications/Postgres.app/Contents/Versions/9.4/lib/libpq.5.dylib /usr/lib
回答8:
My flavor of setup was a little different than the OP: I'm using Postgres.app on Mac and am within a virtualenv; but the symptoms were similar.
For me, this occurred right after updating my Postgres.app from 9.3 to 9.5 on my local, and the error clearly showed the psycopg2 path for libssl.1.0.0.dylib was pointing to the old 9.3 data directory location (the image referenced in this error?). Adding weird things to my ENV or removing symlinks I'm not sure the impact of definitely didn't feel right to me. I solved it by uninstalling then re-installing psycopg2 the same way I had when it was working - something that doesn't feel very dangerous at all:
# In my virtualenv
pip uninstall psycopg2
pip install psycopg2
Then I was all good!
回答9:
Do the following to resolve Library not loaded:libssl.1.0.0.dylib error if you have openssl in /usr/local/Cellar directory
sudo cp /usr/local/Cellar/openssl/<<version>>/lib/libssl.1.0.0.dylib /usr/lib
After doing step 1, if you still get Library not loaded:libcrypto.1.0.0.dylib error. Do the following
sudo cp /usr/local/Cellar/openssl/<<version>>/lib/libcrypto.1.0.0.dylib /usr/lib
回答10:
I was having this issue on Mac, trying ln -s was giving me ln: /usr/lib/libssl.1.0.0.dylib: Operation not permitted I didn't want to mess with my system. Instead What worked for me is to simply install psycopg2-binary : pip install psycopg2-binary
This installed psycopg2-binary-2.8.3 version
回答11:
I tried pip install psycopg2 which was giving similar issues. Then I tried conda install psycopg2, which worked! Also make sure the pip you are using belongs to anaconda (which pip)
回答12:
After trying for more than a day I came to the below solution.
- brew reinstall openssl@1.0
- disable csrutil -> google it how to disable it, so that we could copy something
to /usr/lib - copy libssl.1.0.0.dylib to /usr/lib I did- sudo cp /usr/local/Cellar/openssl/1.0.2s/lib/libssl.1.0.0.dylib /usr/lib
- copy libcrypto.1.0.0.dylib to /usr/lib I did- sudo cp /usr/local/Cellar/openssl/1.0.2s/lib/libcrypto.1.0.0.dylib /usr/lib
Similarly, if you face issue for Library not loaded: libssl.1.0.0.dylib just change the version from 1.0 to 1.1 of openssl and copy libssl.1.1 instead libssl.1.0 and libcrypto.1.1 instead libcrypto.1.0.0
Done you are all set to enjoy psycopg2 in mac.
回答13:
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.
回答14:
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.
来源：https://stackoverflow.com/questions/27264574/import-psycopg2-library-not-loaded-libssl-1-0-0-dylib