This autoformatting PR actually changed the behavior of the error handling:
https://github.com/httplib2/httplib2/pull/105/files#diff-c6669c781a2dee1b2d2671cab4e21c66L985

"raise socket.err, msg" is not the same as "raise socket.error(msg)" in the case where msg is an exception. For instance consider:
msg = socket.timeout("foo")
raise socket.error, msg  # => socket.timeout: foo
raise socket.error(msg)  # => socket.error: foo

This has the effect of potentially changing the type of the error raised by connect(). Interestingly the PY3 copy of the code doesn't have this problem (probably cause it doesn't have msg at all; not sure if it's actually needed but I figured might as well keep it for PY2 in case it is).

The change I propose here will restore the original behavior prior to the autoformat change, and will ensure that both the PY2 and PY3 copies of the code raise the same error type in the event of e.g. a socket.timeout.

Moved msg inline for clarity as well.