Comment 2 for bug 1373960

Hello,

I want to confirm the importance of this feature. Because of maintenance costs, it is very useful to have single copy of the zoneinfo for a project written in several programming languages. Luckily the most of the Unix-like systems already have /usr/share/zoneinfo by default and it would be great if the pytz could use it too.

I took the liberty of creating a patch for pytz-2016.7 which implements the ideas from the initial post regarding the environment variable approach. However I used PYTZ_TZDATADIR for variable name.