Function try_localize_datetime 

pub fn try_localize_datetime(
    ndt: NaiveDateTime,
    tz: &Tz,
    ambiguous: Ambiguous,
    non_existent: NonExistent,
) -> Result<Option<NaiveDateTime>, PolarsError>

Available on crate feature timezones and (crate features dtype-date or dtype-datetime or temporal) only.

Localize datetime according to given time zone.

e.g. ‘2021-01-01 03:00’ -> ‘2021-01-01 03:00CDT’

Note: this may only return Ok(None) if ambiguous is Ambiguous::Null or if non_existent is NonExistent::Null. Otherwise, it will either return Ok(Some(NaiveDateTime)) or PolarsError.

Therefore, calling try_localize_datetime(..., Ambiguous::Raise, NonExistent::Raise)?.unwrap() is safe, and will never panic.