Getting “Library not loaded: libssl.1.0.0.dylib”, “Reason: image not found” with flask_mysqldb

问题

I'm trying out Python 3 with Flask and I'm stuck with the following error while working with databases.

I'm doing this on macOS High Sierra v. 10.13.6

My import code is as follows:

from flask import Flask, render_template, flash, redirect, url_for, session, request, logging
from data import Articles
from flask_mysqldb import MySQL
from wtforms import Form, StringField, TextAreaField, PasswordFeild, validators
from passlib.hash import sha256_crypt

The error I get when trying to run the app, is the following:

Traceback (most recent call last):
    File "app.py", line 3, in <module>
        from flask_mysqldb import MySQL  
    File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site- 
          packages/flask_mysqldb/__init__.py", line 1, in <module> import MySQLdb  
    File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site- 
          packages/MySQLdb/__init__.py", line 18, in <module> import _mysql  
ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site- 
             packages/_mysql.cpython-37m-darwin.so, 2): Library not loaded: 
             libssl.1.0.0.dylib  
    Referenced from: /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site- 
                     packages/_mysql.cpython-37m-darwin.so  
    Reason: image not found

I've looked around in multiple other questions related to mine, but couldn't seem to find anything to solve my problem with. Or at least I didn't know how. I really hope someone can help me out.

回答1:

Solved the Issue

After doing some more search I found a fix that worked for me:

Step 1: Install openssl using brew

brew install openssl

Step 2: Copy libssl.1.0.0.dylib and libcrypto.1.0.0.dylib

cd /usr/local/Cellar/openssl/1.0.1f/lib
sudo cp libssl.1.0.0.dylib libcrypto.1.0.0.dylib /usr/lib/

Note the folder name (1.0.1f). There will be change in that depending on your openssl version

Step 3: Remove the existing links

sudo rm libssl.dylib libcrypto.dylib
sudo ln -s libssl.1.0.0.dylib libssl.dylib
sudo ln -s libcrypto.1.0.0.dylib libcrypto.dylib

That's it.

回答2:

Following worked for me with mysql Ver 14.14 Distrib 5.7.23, for osx10.14 (x86_64) & Django 2.2.3.

Install version 1.1

   brew install openssl@1.1

Copy required library to /usr/lib location. Refer to article at this url if you have trouble copying to /usr/lib location. System Integrity Change

    cd /usr/local/Cellar/openssl@1.1/1.1.1c/lib
    sudo cp libssl.1.1.dylib libcrypto.1.1.dylib /usr/lib/

Remove and update link

    sudo rm libssl.dylib libcrypto.dylib`
    sudo ln -s libcrypto.1.1.dylib libcrypto.dylib
    sudo ln -s libssl.1.1.dylib libssl.dylib

回答3:

Earlier I was getting the following error.

ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/osgeo/_gdal.cpython-37m-darwin.so, 2): Library not loaded: /usr/local/opt/openssl/lib/libcrypto.1.0.0.dylib
  Referenced from: /usr/local/opt/gdal/lib/libgdal.20.dylib
  Reason: image not found

for the following import