Struct pyo3::PyDowncastError

pub struct PyDowncastError<'a> { /* fields omitted */ }

Error that indicates a failure to convert a PyAny to a more specific Python type.

Implementations

impl<'a> PyDowncastError<'a>

pub fn new(from: &'a PyAny, to: impl Into<Cow<'static, str>>) -> Self

Trait Implementations

impl<'a> Debug for PyDowncastError<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> Display for PyDowncastError<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<'a> Error for PyDowncastError<'a>

pub fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any.

pub fn backtrace(&self) -> Option<&Backtrace>

🔬 This is a nightly-only experimental API. (backtrace)

Returns a stack backtrace, if available, of where this error occurred.

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

pub fn cause(&self) -> Option<&dyn Error>

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl<'a> From<PyDowncastError<'a>> for PyErr

Convert PyDowncastError to Python TypeError.

fn from(err: PyDowncastError<'_>) -> PyErr

Performs the conversion.