No time zone found with key localtime

[dkabus]

Since the upgrade to version 0.18.0, the module throws this error when running dav2rem on Arch Linux:

zoneinfo._common.ZoneInfoNotFoundError: 'No time zone found with key localtime'

I have installed the package from the AUR and am currently on version 0.18.0.r0.gc30c852-1. Downgrading the package via pip install remind==0.17.0 fixes this issue.

Here the full error message:

Traceback (most recent call last):
  File "/usr/lib/python3.10/zoneinfo/_common.py", line 12, in load_tzdata
    return importlib.resources.open_binary(package_name, resource_name)
  File "/usr/lib/python3.10/importlib/resources.py", line 46, in open_binary
    return reader.open_resource(resource)
  File "/usr/lib/python3.10/importlib/abc.py", line 433, in open_resource
    return self.files().joinpath(resource).open('rb')
  File "/usr/lib/python3.10/pathlib.py", line 1117, in open
    return self._accessor.open(self, mode, buffering, encoding, errors,
FileNotFoundError: [Errno 2] No such file or directory: '/usr/lib/python3.10/site-packages/tzdata/zoneinfo/localtime'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/dav2rem", line 33, in <module>
    sys.exit(load_entry_point('remind-caldav==0.8.0', 'console_scripts', 'dav2rem')())
  File "/usr/lib/python3.10/site-packages/dav2rem.py", line 60, in main
    rem = Remind(args.remfile)
  File "/usr/lib/python3.10/site-packages/remind.py", line 55, in __init__
    self._localtz = localtz if localtz else ZoneInfo("localtime")
  File "/usr/lib/python3.10/zoneinfo/_common.py", line 24, in load_tzdata
    raise ZoneInfoNotFoundError(f"No time zone found with key {key}")
zoneinfo._common.ZoneInfoNotFoundError: 'No time zone found with key localtime'
pull remote contact_birthdays to .temp.birthdays.rem
Traceback (most recent call last):
  File "/usr/lib/python3.10/zoneinfo/_common.py", line 12, in load_tzdata
    return importlib.resources.open_binary(package_name, resource_name)
  File "/usr/lib/python3.10/importlib/resources.py", line 46, in open_binary
    return reader.open_resource(resource)
  File "/usr/lib/python3.10/importlib/abc.py", line 433, in open_resource
    return self.files().joinpath(resource).open('rb')
  File "/usr/lib/python3.10/pathlib.py", line 1117, in open
    return self._accessor.open(self, mode, buffering, encoding, errors,
FileNotFoundError: [Errno 2] No such file or directory: '/usr/lib/python3.10/site-packages/tzdata/zoneinfo/localtime'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/dav2rem", line 33, in <module>
    sys.exit(load_entry_point('remind-caldav==0.8.0', 'console_scripts', 'dav2rem')())
  File "/usr/lib/python3.10/site-packages/dav2rem.py", line 60, in main
    rem = Remind(args.remfile)
  File "/usr/lib/python3.10/site-packages/remind.py", line 55, in __init__
    self._localtz = localtz if localtz else ZoneInfo("localtime")
  File "/usr/lib/python3.10/zoneinfo/_common.py", line 24, in load_tzdata
    raise ZoneInfoNotFoundError(f"No time zone found with key {key}")
zoneinfo._common.ZoneInfoNotFoundError: 'No time zone found with key localtime'

Thank you maintaining this fantastic tool! It's very much appreciated.

[jspricke]

Since the upgrade to version 0.18.0, the module throws this error when running dav2rem on Arch Linux:

zoneinfo._common.ZoneInfoNotFoundError: 'No time zone found with key localtime'

Seems like you are missing a:

sudo ln -s /etc/localtime /usr/share/zoneinfo/localtime

That is provided in Debian by the tzdata package.

I could implement a fallback to /etc/localtime and afterwards to UTC but not sure why Python doesn't do that itself.

[dkabus]

Thanks, that symlink fixes it.

Indeed it is weird that Python doesn't check for this as a fallback.

timedatectl which is part of systemd only sets /etc/localtime (see man timedatectl and man 5 localtime).

[jspricke]

Indeed it is weird that Python doesn't check for this as a fallback.

I understand this is a compile configuration problem:

Debian: python3 -c "from zoneinfo import TZPATH; print(TZPATH)" ('/usr/share/zoneinfo', '/usr/lib/zoneinfo', '/usr/share/lib/zoneinfo', '/etc/zoneinfo')

Arch: python3 -c "from zoneinfo import TZPATH; print(TZPATH)" ('/usr/share/zoneinfo',)

OpenBSD: ('/usr/share/zoneinfo', '/usr/lib/zoneinfo', '/usr/share/lib/zoneinfo', '/etc/zoneinfo')

So it can't find /etc/localtime. Not sure if python-remind should work around that.

[falsifian]

~I'm experiencing this on OpenBSD-current. I tried creating /etc/zoneinfo by running ln -s /usr/share/zoneinfo/UTC /etc/zoneinfo, but it doesn't help; see below output. Setting TZ=America/Toronto in the environment (which is the usual way I pass on time zone information) doesn't help either.~

~I can't see any documentation claiming that ZoneInfo("localtime") should work. There's mention of this at https://github.com/regebro/tzlocal/issues/117.~

~I guess one option could be to use the tzlocal module? But that would be another dependency. Alternatively, I personally wouldn't mind passing the time zone as a command-line option to dav2rem (which is the tool I'm actually trying to use) so the fallback to ZoneInfo("localtime") never gets triggered.~

moth ~ $ python3 
Python 3.10.9 (main, Jan 10 2023, 16:10:16) [Clang 13.0.0 ] on openbsd7
Type "help", "copyright", "credits" or "license" for more information.
>>> import remind
>>> remind.Remind("f.rem")
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/zoneinfo/_common.py", line 12, in load_tzdata
    return importlib.resources.open_binary(package_name, resource_name)
  File "/usr/local/lib/python3.10/importlib/resources.py", line 43, in open_binary
    package = _common.get_package(package)
  File "/usr/local/lib/python3.10/importlib/_common.py", line 66, in get_package
    resolved = resolve(package)
  File "/usr/local/lib/python3.10/importlib/_common.py", line 57, in resolve
    return cand if isinstance(cand, types.ModuleType) else importlib.import_module(cand)
  File "/usr/local/lib/python3.10/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
  File "<frozen importlib._bootstrap>", line 992, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1004, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'tzdata'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/falsifian/.local/lib/python3.10/site-packages/remind.py", line 55, in __init__
    self._localtz = localtz if localtz else ZoneInfo("localtime")
  File "/usr/local/lib/python3.10/zoneinfo/_common.py", line 24, in load_tzdata
    raise ZoneInfoNotFoundError(f"No time zone found with key {key}")
zoneinfo._common.ZoneInfoNotFoundError: 'No time zone found with key localtime'
>>> 

[falsifian]

Sorry, never mind. This is fixed in master. I was using 0.18.