chore(ruff): use names not magic numbers. This one names the 32 chars as being equivalent to 256 bytes Also adds the missing http_.client.TOO_MANY_REQUESTS under python 2 to http_. It allows me to use a symbolic name and not have to touch client.py code when I remove python2 support from http_. Also the prior checkin had a bogus commit message. Sigh, time to step away from the computer today 8-). It replaced a magic number with MAX_MIME_EXTENSION_LENGTH which was set to a better magic number derived by parsing extensions in /etc/mime.types.

# 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