Upgraded to Ubuntu 16.04 now MySQL-python dependencies are broken

Question:

I just upgraded my Ubuntu install to 16.04 and this seems to have broken my mysql dependencies in the MySQL-python package.

Here is my error message:

  File "/opt/monitorenv/local/lib/python2.7/site-packages/sqlalchemy/engine/__init__.py", line 386, in create_engine
return strategy.create(*args, **kwargs)
  File "/opt/monitorenv/local/lib/python2.7/site-packages/sqlalchemy/engine/strategies.py", line 75, in create
dbapi = dialect_cls.dbapi(**dbapi_args)
  File "/opt/monitorenv/local/lib/python2.7/site-packages/sqlalchemy/dialects/mysql/mysqldb.py", line 92, in dbapi
return __import__('MySQLdb')
  File "/opt/monitorenv/local/lib/python2.7/site-packages/MySQLdb/__init__.py", line 19, in <module>
    import _mysql
ImportError: libmysqlclient.so.18: cannot open shared object file: No such file or directory

So basically the import_mysql is looking for an so file that doesn’t exist because in Ubuntu 16.04, I have libmysqlclient20 installed.
And libmysqlclient18 is not available.
As far as I am aware (or at least I believe) my python libraries are up to date with the latest versions.

(I tried running pip install --upgrade mysql-python which indicated it was up to date).

Do you guys have any suggestions ?

Asked By: RyanH

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Source

Answers:

I ended up finding the solution to my problems with pip install --no-binary MySQL-python MySQL-python
as stated in this thread : Python's MySQLdb can’t find libmysqlclient.dylib with Homebrewed MySQL

Answered By: RyanH

Thank for Largaroth. If you use mysqlclient on Ubuntu 16.04 and have error:

ImportError: libmysqlclient.so.18: cannot open shared object file: No such file or directory

You can fix:

sudo -H pip uninstall mysqlclient

sudo -H pip install --no-binary mysqlclient mysqlclient
Answered By: Cuong Tran

I had the same issue. I uninstalled and reinstalled MySQL-python:

pip uninstall MySQL-python
pip install MySQL-python
Answered By: Warren O'Neill

My problem was that I was using wheelhouse from old OS.

The problem was solved when I uninstalled/installed the package or updated wheelhouse…

From docs:

http://mysql-python.sourceforge.net/FAQ.html#importerror

This means you have a version of MySQLdb compiled against one version of MySQL, and are now trying to run it against a different version. The shared library version tends to change between major releases.

Solution: Rebuilt MySQLdb, or get the matching version of MySQL.

Answered By: confiq

I had this issue with python 3.6… when I used an environment with Python 3.5 it worked just fine.

Answered By: Kyle

I had this issue on updating to stretch. To fix it I updated my requirements.txt:

mysqlclient==1.4.2.post1

So either update that manually or pip install –upgrade mysqlclient

Answered By: Mark

I solved this on my virtual environment using django 2.2.7 and Ubuntu 19.10 by doing:

pip3 uninstall mysqlclient

pip3 install mysqlclient

Answered By: FelipeGTX

Steps:

  1. search mysql path

    which mysql

    O/p : /opt/mysql/

  2. create Symbolic Links to usr/lib

    sudo ln -s /opt/mysql/lib/mysqlclient.so.20 /usr/lib

Note: mysqlclient.so.20 will be as per your version

Answered By: Anmol Mourya