tzlocal.get_localzone fails on Termux

[jean]

https://termux.com/ offers a full Linux userland on Android without rooting.
However the Android version of Linux is a bit "special". It doesn't have /etc/localtime.
Using tzlocal 1.5.1:

$ python
Python 2.7.14 (default, Jan  7 2018, 04:01:39)
[GCC 4.2.1 Compatible Android Clang 5.0.300080 ] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import tzlocal
>>> tzlocal.get_localzone()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/data/data/com.termux/files/home/git/trellowarrior/lib/python2.7/site-packages/tzlocal/unix.py", line 131, in get_localzone
    _cache_tz = _get_localzone()
  File "/data/data/com.termux/files/home/git/trellowarrior/lib/python2.7/site-packages/tzlocal/unix.py", line 125, in _get_localzone
    raise pytz.UnknownTimeZoneError('Can not find any timezone configuration')
pytz.exceptions.UnknownTimeZoneError: 'Can not find any timezone configuration'

In this environment, this works to get the timezone (that's calling /system/bin/getprop):

$ getprop persist.sys.timezone
Asia/Manila

[regebro]

Well, why not. :-)

Could you add yourself to the contributors in README.txt, and add this change to CHANGES.txt?

I can't come up with a good way to test it, though.

[jean]

Done :-)
I'll ask the Termux crowd if they have suggestions for testing.

[jean]

@regebro beep (I haven't heard anything useful for testing)

[regebro]

Merged

[alensiljak]

In which version is this supposed to be released? I have tzlocal 1.5.1 as the latest on Termux and still getting the UnknownTimeZoneError. Thanks!
Edit: I see that it has been merged after 1.5.1 so hopefully one of the later versions gets published soon enough.

[regebro]

It's not, because I could not get much information. So in short, at the moment, Android isn't supported.
Since we now have had people who want to use it on Android, perhaps it's time to support it. But it would be good if we could get an actual Android developer to help, I've never done anything with it.

[alensiljak]

Sebastien, the author of piecash, was kind enough to provide a workaround which includes manually setting the TZ variable in the bash profile. That can be used for the moment.

I am not an Android developer per se but I'm trying out crazy things, like distributing a Flask web app through Pypi to an Android phone and running it there in Termux. So, if I can help in any way, I certainly would.