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Everything was working great until I upgraded the OS to Ubuntu 17.10. Now my Django project won't run (python manage.py runserver) because psycopg2 won't import. psycopg2 is already installed with pip (nothing has changed there). To be exact this is the error:
lib/python3.5/site-packages/psycopg2/.libs/libresolv-2-c4c53def.5.so:
symbol __res_maybe_init, version GLIBC_PRIVATE not defined in file
libc.so.6 with link time reference
791
The current psycopg2 implementation supports: Python 2 versions from 2.6 to 2.7. Python 3 versions from 3.2 to 3.6. PostgreSQL server versions from 7.4 to 9.6.
The psycopg2-binary package is meant for beginners to start playing with Python and PostgreSQL without the need to meet the build requirements.
psycopg2-binary and psycopg2 both give us the same code that we interact with. The difference between the two is in how that code is installed in our computer.
Reinstall psycopg2 and use the binary.
sudo pip uninstall psycopg2
pip install psycopg2-binary
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