使用flask_mysqldb获取“库未加载：libssl.1.0.0.dylib”，“原因：找不到图像”

Question

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.

Answer 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.

Answer 2

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

1. Install version 1.1

   brew install openssl@1.1

2. 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/

3. 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

Answer 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

import gdal

Just create the directory in the desired location

My installation was here...

/usr/local/Cellar/openssl/1.0.2s/

I created a directory at their desired location. openssl directory was not there, I mkdir ed it.

/usr/local/opt/openssl/

Then copied the folder as required. Now

import gdal

works.

Answer 4

My approach to this problem was this:

Instead of:

from flask_mysqldb import MySQL

I used:

from flaskext.mysql import MySQL

So this means that I pip install flask-mysql instead of pip install flask-mysqldb . Note: if you want to obtain a cursor, with this lib you can do cursor = mysql.get_db().cursor()

Answer 5

In case of Mac, in the ~/.bash_profile where you are updating the openssl path. Escape the openssl@1.1 as openssl\\@1.1 .

export PATH="/usr/local/opt/openssl\\@1.1/bin:$PATH" export LDFLAGS="-L/usr/local/opt/openssl\\@1.1/lib" export CPPFLAGS="-I/usr/local/opt/openssl\\@1.1/include"

Answer 6

For me, I already had openssl installed and the solution was a simple one -- re-installing openssl:

brew reinstall openssl@1.1

After that, the imports in python worked smoothly.