kahemker commented on issue #46080: URL: https://github.com/apache/arrow/issues/46080#issuecomment-2802176540
Let's start by reviewing the [Installing PyArrow](https://arrow.apache.org/docs/python/install.html) documentation. [Using Pip](https://arrow.apache.org/docs/python/install.html#using-pip) simply states: > Install the latest version from PyPI (Windows, Linux and macOS) `pip install pyarrow` I experienced no importing issues of the pip wheels, so the Visual C++ Redistributable note can be skipped over. When I run [my minimum reproducible example](https://github.com/kahemker/pyarrow-orc-failure), I am presented with a timezone related runtime error, so now let's read the [tzdata on Windows](https://arrow.apache.org/docs/python/install.html#tzdata-on-windows) text in the install instructions > While Arrow uses the OS-provided timezone database on Linux and macOS, it requires a user-provided database on Windows. To download and extract the text version of the IANA timezone database follow the instructions in the C++ [Runtime Dependencies](https://arrow.apache.org/docs/cpp/build_system.html#download-timezone-database) or use pyarrow utility function pyarrow.util.download_tzdata_on_windows() that does the same. >By default, the timezone database will be detected at %USERPROFILE%\Downloads\tzdata. If the database has been downloaded in a different location, you will need to set a custom path to the database from Python: `import pyarrow as pa` `pa.set_timezone_db_path("custom_path")` I run `pyarrow.util.download_tzdata_on_windows()` and this does not solve my time zone problem. I run `pa.set_timezone_db_path("C:\Users\kyleh\Downloads\tzdata")` which I am led to believe should point PyArrow to the timezone information downloaded by `pyarrow.util.download_tzdata_on_windows()`. Still experiencing the runtime error Not until do I perform these step does the runtime problem resolve itself > `pip install tzdata` or in my case since I am using uv `uv add tzdata` `$Env:TZDIR = "C:\Users\kyleh\PycharmProjects\pyarrow-orc-failure\.venv\Lib\site-packages\tzdata\zoneinfo"` None of this information is discussed in the PyArrow installation documentation. Therefore, `pyarrow.util.download_tzdata_on_windows()` does not work anymore. Maybe it is better to say: `pyarrow.util.download_tzdata_on_windows()` works, but does not solve all timezone related issues with PyArrow and further guidance in the PyArrow installation documentation should be added to cover this edge case that I presented within this issue. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@arrow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
