SQLAlchemy version 1.0.11 warning and 1.3.3 error

[KerstenDoering]

python RunXapian.py -x
/usr/lib/python2.7/dist-packages/sqlalchemy/sql/elements.py:3779: SAWarning: Textual SQL expression '\n SELECT \n ...' should be explicitly declared as text('\n SELECT \n ...') (this warning may be suppressed after 10 occurrences)
{"expr": util.ellipses_string(element)})

[KerstenDoering]

In the current SQLAlchemy version of 1.3.3, this turned out to be no longer a warning, but an error:
sqlalchemy.exc.ArgumentError: Textual SQL expression '\n SELECT \n ...' should be explicitly declared as text('\n SELECT \n ...')

The current workaround is to set the SQLAlchemy version to 1.0.11 as follows:

Did you install "pip" for managing the SQLAlchemy version? If not, you can do so by using this command:
sudo apt install python-pip

The following command will show the current version of SQLAlchemy:
pip list | grep "SQLAlchemy"
In my case, this is 1.3.3.

Now, we need to be sure that SQLAlchemy gets completely uninstalled:
pip uninstall SQLAlchemy

The next command will install SQLAlchemy in version 1.0.11:
pip install SQLAlchemy==1.0.11

If you have a look at the installed version, again, you should see that version 1.0.11 is installed:
pip list | grep "SQLAlchemy"
SQLAlchemy (1.0.11)