Timezone information missing under python 3.5

[prymitive]

I've noticed that when I'm parsing timestamp with timezone information under python 3.5 project I'm getting timezone unaware datetime objects:

Python 2.7.12 (default, Sep 29 2016, 13:30:34) 
[...]
In [1]: import ciso8601

In [2]: t = ciso8601.parse_datetime('2014-01-09T21:48:00.921000+05:30')

In [3]: t.tzinfo
Out[3]: pytz.FixedOffset(330)

Python 3.5.1 (default, Sep 19 2016, 10:16:17) 
[...]
In [1]: import ciso8601

In [2]: t = ciso8601.parse_datetime('2014-01-09T21:48:00.921000+05:30')

In [3]: t.tzinfo

In [4]: type(t.tzinfo)
Out[4]: NoneType

Using ciso8601==1.0.2 in both cases. Tested on Fedora 24 with distro provided python binaries.

[prymitive]

Hmm, I've added 3.5 to travis and can't seem to reproduce this - https://travis-ci.org/prymitive/ciso8601/jobs/171866331

[prymitive]

I wanted to run tests with fedora docker image and noticed that pytz is installed when running tests. I've installed it in my virtualenv and now everything works. So this seems to be simply missed dependency which is mentioned in the README (I've missed that, sorry).

[thomasst]

It should probably do a better job at failing in https://github.com/closeio/ciso8601/blob/master/module.c#L245

I think right now it leaves pytz_fixed_offset and pytz_utc uninitialized, which is bad.

[thomasst]

Opened #19 to address this