Test case for backend not defined; remove unreachable code Verify that error is raised in configuration.py if backend is not defined in config.ini. Remove unreachable code from instance.py that detects that backend is not defined. It hasn't been reachable since version 1.6.1 because the configuration.py module made the backend option mandatory. Hence configuration.py raises the error and never passes control back to the unreachable code.

# In Python 3 the "anydbm" module was renamed to be "dbm" which is now a
# package containing the various implementations. The "wichdb" module's
# whichdb() function was moved to the new "dbm" module.

try:
    # old school first because <3 had a "dbm" module too...
    import anydbm
    from whichdb import whichdb
except ImportError:
    # python 3+
    import dbm as anydbm
    whichdb = anydbm.whichdb