pyodbc import error 'GLIBC_2.25 not found' inside virtual environment

Environment

• Python: Anaconda python 3.6.5
• pyodbc: 4.0.22
• OS: Ubuntu 16.04.03 LTS
• driver: msodbcsql17_17.1.0.1-1_amd64.deb

Issue

Actually I just want to use Flask command line tool together with flask-migrate to update my database model by using

flask db migrate

But got unexpected error message this time as below

(venv) root@CNBEH-REPORT-P21:/var/www/FlaskApp/FlaskApp# flask db migrate
/var/www/FlaskApp/FlaskApp/venv/lib/python3.6/importlib/_bootstrap.py:219: RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
  return f(*args, **kwds)
Usage: flask db migrate [OPTIONS]

Error: While importing "FlaskApp.app", an ImportError was raised:

Traceback (most recent call last):
  File "/var/www/FlaskApp/FlaskApp/venv/lib/python3.6/site-packages/flask/cli.py", line 235, in locate_app
    __import__(module_name)
  File "/var/www/FlaskApp/FlaskApp/__init__.py", line 110, in <module>
    app = create_app()
  File "/var/www/FlaskApp/FlaskApp/__init__.py", line 87, in create_app
    from FlaskApp.Dashboard import db_mod
  File "/var/www/FlaskApp/FlaskApp/Dashboard/__init__.py", line 5, in <module>
    from FlaskApp.Dashboard import routes
  File "/var/www/FlaskApp/FlaskApp/Dashboard/routes.py", line 2, in <module>
    from FlaskApp.Dashboard.machine_status import status_plot
  File "/var/www/FlaskApp/FlaskApp/Dashboard/machine_status.py", line 8, in <module>
    mes_engine = create_engine(mes_string)
  File "/var/www/FlaskApp/FlaskApp/venv/lib/python3.6/site-packages/SQLAlchemy-1.2.10-py3.6-linux-x86_64.egg/sqlalchemy/engine/__init__.py", line 424, in create_engine
    return strategy.create(*args, **kwargs)
  File "/var/www/FlaskApp/FlaskApp/venv/lib/python3.6/site-packages/SQLAlchemy-1.2.10-py3.6-linux-x86_64.egg/sqlalchemy/engine/strategies.py", line 81, in create
    dbapi = dialect_cls.dbapi(**dbapi_args)
  File "/var/www/FlaskApp/FlaskApp/venv/lib/python3.6/site-packages/SQLAlchemy-1.2.10-py3.6-linux-x86_64.egg/sqlalchemy/connectors/pyodbc.py", line 38, in dbapi
    return __import__('pyodbc')
ImportError: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.25' not found (required by /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0)

(venv) root@CNBEH-REPORT-P21:/var/www/FlaskApp/FlaskApp#

then I searched about the glibc version stuff, when I run ldd --version, I got

(venv) root@CNBEH-REPORT-P21:/var/www/FlaskApp/FlaskApp# ldd --version
ldd (Ubuntu GLIBC 2.23-0ubuntu9) 2.23
Copyright (C) 2016 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Written by Roland McGrath and Ulrich Drepper.

Even though glibc 2.23 here, the flask application itself works perfectly with pyodbc on the front end web page. The problem only happens when I try backend command stuff.

I don`t quite get the point why /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0 is mentioned here, I install anaconda python 3.6.5 as system wide python, and created virtual environment for flask application. I do search out another one located in anaconda folder:

find / -name '*libpython3*'
...
/usr/anaconda3/py36/lib/libpython3.6m.so.1.0
...

Are there any relations here? Really looking forward your help! Thanks a lot!

[ivymichael]

Hello v-chojas,

Thanks for your reply! I survived with the second-time installation withpython setup.py installcommand for latest pyODBC source code, and theflask shellcommand then works. But like I said, when using pip list checking the pyODBC version it says pyodbc 4.0.0-unsupported Any idea why it is like this? the package somehow still works in the environment.

[ivymichael]

Thank you very much, I think the issue can be closed now.