AlenkaF commented on code in PR #38179:
URL: https://github.com/apache/arrow/pull/38179#discussion_r1431430810
##########
python/pyarrow/util.py:
##########
@@ -228,3 +228,40 @@ def _break_traceback_cycle_from_frame(frame):
# us visit the outer frame).
refs = gc.get_referrers(frame)
refs = frame = this_frame = None
+
+
+def download_tzdata_on_windows():
+ """
+ Download and extract 2021e IANA timezone database into
+ the expected location in the Downloads directory.
+ """
+ if sys.platform != 'win32':
+ raise TypeError(f"Timezone database is already provided by
{sys.platform}")
+
+ import requests
+ import tarfile
+
+ tzdata_path = os.path.expandvars(r"%USERPROFILE%\Downloads\tzdata")
+ tzdata_compressed = os.path.join(tzdata_path, "tzdata.tar.gz")
+ os.makedirs(tzdata_path, exist_ok=True)
+
+ response = requests.get(
+ 'https://data.iana.org/time-zones/releases/tzdata2021e.tar.gz',
Review Comment:
This would probably be
'https://data.iana.org/time-zones/tzdata-latest.tar.gz'. I am not sure if it
needs to be 2021 version as in our docs:
https://arrow.apache.org/docs/dev/cpp/build_system.html#runtime-dependencies
though.
Ah, looking at the [PR that implemented the db for WIndows in the first
place](https://github.com/apache/arrow/pull/12536/files#r832697782), I see the
version was set without a specific reason so I guess we can change it for
latest (in the docs also) 👍
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