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Conversion between chrono_tz::Tz and zoneinfo.ZoneInfo
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`chrono-tz` feature allowing conversion between `chrono_tz::Tz` and `zoneinfo.ZoneInfo` |
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#![cfg(all(Py_3_9, feature = "chrono-tz"))] | ||
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//! Conversions to and from [chrono-tz](https://docs.rs/chrono-tz/)’s `Tz`. | ||
//! | ||
//! This feature requires at least Python 3.9. | ||
//! | ||
//! # Setup | ||
//! | ||
//! To use this feature, add this to your **`Cargo.toml`**: | ||
//! | ||
//! ```toml | ||
//! [dependencies] | ||
//! chrono-tz = "0.8" | ||
#![doc = concat!("pyo3 = { version = \"", env!("CARGO_PKG_VERSION"), "\", features = [\"chrono-tz\"] }")] | ||
//! ``` | ||
//! | ||
//! Note that you must use compatible versions of chrono, chrono-tz and PyO3. | ||
//! The required chrono version may vary based on the version of PyO3. | ||
//! | ||
//! # Example: Convert a `zoneinfo.ZoneInfo` to chrono-tz's `Tz` | ||
//! | ||
//! ```rust,no_run | ||
//! use chrono_tz::Tz; | ||
//! use pyo3::{Python, ToPyObject}; | ||
//! | ||
//! fn main() { | ||
//! pyo3::prepare_freethreaded_python(); | ||
//! Python::with_gil(|py| { | ||
//! // Convert to Python | ||
//! let py_tzinfo = Tz::Europe__Paris.to_object(py); | ||
//! // Convert back to Rust | ||
//! assert_eq!(py_tzinfo.extract::<Tz>(py).unwrap(), Tz::Europe__Paris); | ||
//! }); | ||
//! } | ||
//! ``` | ||
use crate::exceptions::PyValueError; | ||
use crate::sync::GILOnceCell; | ||
use crate::types::PyType; | ||
use crate::{intern, FromPyObject, IntoPy, Py, PyAny, PyObject, PyResult, Python, ToPyObject}; | ||
use chrono_tz::Tz; | ||
use std::str::FromStr; | ||
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impl ToPyObject for Tz { | ||
fn to_object(&self, py: Python<'_>) -> PyObject { | ||
static ZONE_INFO: GILOnceCell<Py<PyType>> = GILOnceCell::new(); | ||
ZONE_INFO | ||
.get_or_try_init_type_ref(py, "zoneinfo", "ZoneInfo") | ||
.unwrap() | ||
.call1((self.name(),)) | ||
.unwrap() | ||
.into() | ||
} | ||
} | ||
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impl IntoPy<PyObject> for Tz { | ||
fn into_py(self, py: Python<'_>) -> PyObject { | ||
self.to_object(py) | ||
} | ||
} | ||
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impl FromPyObject<'_> for Tz { | ||
fn extract(ob: &PyAny) -> PyResult<Tz> { | ||
Tz::from_str(ob.getattr(intern!(ob.py(), "key"))?.extract()?) | ||
.map_err(|e| PyValueError::new_err(e.to_string())) | ||
} | ||
} | ||
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#[cfg(all(test, not(windows)))] // Troubles loading timezones on Windows | ||
mod tests { | ||
use super::*; | ||
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#[test] | ||
fn test_frompyobject() { | ||
Python::with_gil(|py| { | ||
assert_eq!( | ||
new_zoneinfo(py, "Europe/Paris").extract::<Tz>().unwrap(), | ||
Tz::Europe__Paris | ||
); | ||
assert_eq!(new_zoneinfo(py, "UTC").extract::<Tz>().unwrap(), Tz::UTC); | ||
assert_eq!( | ||
new_zoneinfo(py, "Etc/GMT-5").extract::<Tz>().unwrap(), | ||
Tz::Etc__GMTMinus5 | ||
); | ||
}); | ||
} | ||
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#[test] | ||
fn test_topyobject() { | ||
Python::with_gil(|py| { | ||
let assert_eq = |l: PyObject, r: &PyAny| { | ||
assert!(l.as_ref(py).eq(r).unwrap()); | ||
}; | ||
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assert_eq( | ||
Tz::Europe__Paris.to_object(py), | ||
new_zoneinfo(py, "Europe/Paris"), | ||
); | ||
assert_eq(Tz::UTC.to_object(py), new_zoneinfo(py, "UTC")); | ||
assert_eq( | ||
Tz::Etc__GMTMinus5.to_object(py), | ||
new_zoneinfo(py, "Etc/GMT-5"), | ||
); | ||
}); | ||
} | ||
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fn new_zoneinfo<'a>(py: Python<'a>, name: &str) -> &'a PyAny { | ||
zoneinfo_class(py).call1((name,)).unwrap() | ||
} | ||
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fn zoneinfo_class(py: Python<'_>) -> &PyAny { | ||
py.import("zoneinfo").unwrap().getattr("ZoneInfo").unwrap() | ||
} | ||
} |
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@@ -2,6 +2,7 @@ | |
pub mod anyhow; | ||
pub mod chrono; | ||
pub mod chrono_tz; | ||
pub mod either; | ||
pub mod eyre; | ||
pub mod hashbrown; | ||
|
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