Make event properties raise AttributeError instead

make imports local

move httplib import to six

Move more xrange to six

Don't yield in list comprehensions

Open config file in non-bytes mode

Open certificate files as bytes

Replace stringIO imports with six

Add py3 tests to tox with folders that work

more bytes strings

add missing comma

Use run_in_background in preference to preserve_fn

Construct HMAC as bytes on py3

Use six.moves.urlparse

Signed-off-by: Adrian Tschira <nota@notafile.com>

Signed-off-by: Adrian Tschira <nota@notafile.com>

plus a bonus next()

Signed-off-by: Adrian Tschira <nota@notafile.com>

Signed-off-by: Adrian Tschira <nota@notafile.com>

I've tried to grep for more of this with no success.

Signed-off-by: Adrian Tschira <nota@notafile.com>

Signed-off-by: Adrian Tschira <nota@notafile.com>

It's just a few tests, but it will at least prevent a few files from
regressing. Also, it makes it easiert to check your code against py36
while writing it.

Signed-off-by: Adrian Tschira <nota@notafile.com>

Use deferred.addTimeout instead of time_bound_deferred

While I was going through uses of preserve_fn for other PRs, I converted places
which only use the wrapped function once to use run_in_background, to avoid
creating the function object.

Twisted 16.0 doesn't have addTimeout, so let's backport it.

reraise exceptions more carefully

Miscellaneous fixes to python_dependencies

Improve exception handling for background processes