Add support for Python 3.11 and MySQL 5.7

[ethho]

The purpose of this PR is to add support for Python 3.10 and 3.11 with MySQL 5.7, fixing #1149 . My question to @dimitri-yatsenko is: do we even want to support this use case?

JIRA ticket: https://datajoint.atlassian.net/browse/PLAT-188

As discovered in #1146 (comment), calls to dj.conn and dj.Connection sometimes fail when called with default arguments, using Python 3.11 and MySQL 5.7. All tests pass with Python <=3.8 and MySQL 5.7 or 8.0, and all tests pass with Python 3.11 and MySQL 8.0, as corroborated by CI in #1146.

Additional Details

I believe that these failures relate to the default TLS/SSL configuration in MySQL 5.7 and 8.0, and some assumptions that we make about this default configuration when setting the default values (particularly the use_tls kwarg) in datajoint.conn and datajoint.Connection.__init__. This might be due to an incompatibility between MySQL 5.7 and PyMySQL v1.0.2, though I'll note that pymysql==1.0.2 used in the pytest containers I tried for both Python 3.8 and Python 3.11:

Console logs

$ PY_VER=3.8 MYSQL_VER=8.0 DISTRO=alpine MINIO_VER=RELEASE.2022-08-11T04-37-28Z HOST_UID=$(id -u) dkc run -it app sh
[+] Creating 3/3
 ✔ Container ethho-datajoint-python-db-1                         Recreated                                                        10.6s 
 ✔ Container ethho-datajoint-python-fakeservices.datajoint.io-1  Running                                                           0.0s 
 ✔ Container ethho-datajoint-python-minio-1                      Running                                                           0.0s 
[+] Running 1/1
 ✔ Container ethho-datajoint-python-db-1  Started                                                                                  0.3s 
(base) anaconda@fc9662eee1b8:/src$ python3 --version
Python 3.8.15
(base) anaconda@fc9662eee1b8:/src$ pip show pymysql
Name: PyMySQL
Version: 1.0.2
Summary: Pure Python MySQL Driver
Home-page: https://github.com/PyMySQL/PyMySQL/
Author: yutaka.matsubara
Author-email: [email protected]
License: "MIT"
Location: /opt/conda/lib/python3.8/site-packages
Requires: 
Required-by: 

$ PY_VER=3.11 MYSQL_VER=8.0 DISTRO=alpine MINIO_VER=RELEASE.2022-08-11T04-37-28Z HOST_UID=$(id -u) dkc run -it app sh
[+] Creating 3/0
 ✔ Container ethho-datajoint-python-fakeservices.datajoint.io-1  Running                                                           0.0s 
 ✔ Container ethho-datajoint-python-db-1                         Running                                                           0.0s 
 ✔ Container ethho-datajoint-python-minio-1                      Running                                                           0.0s 
(base) anaconda@88726ce26db5:/src$ python3 --version
Python 3.11.0
(base) anaconda@88726ce26db5:/src$ pip show pymysql
Name: PyMySQL
Version: 1.0.2
Summary: Pure Python MySQL Driver
Home-page: https://github.com/PyMySQL/PyMySQL/
Author: yutaka.matsubara
Author-email: [email protected]
License: "MIT"
Location: /opt/conda/lib/python3.11/site-packages
Requires: 
Required-by: 

Commits

• All changes in Migrate nose tests to pytest #1142
• Use TLS config for Connection constructor
• Use fixture for test_json skip
• For use_tls, use config value if not provided as kwarg

[ethho]

@dimitri-yatsenko , @corprew , and @ethho agreed that for OS projects, we will not support versions of dependencies that are no longer receiving security updates. This includes MySQL 5.7, so we will deprecate this version in datajoint-python and close this ticket.