Struct pyo3::err::DowncastError
source · pub struct DowncastError<'a, 'py> {
from: Borrowed<'a, 'py, PyAny>,
to: Cow<'static, str>,
}
Expand description
Error that indicates a failure to convert a PyAny to a more specific Python type.
Fields§
§from: Borrowed<'a, 'py, PyAny>
§to: Cow<'static, str>
Implementations§
source§impl<'a, 'py> DowncastError<'a, 'py>
impl<'a, 'py> DowncastError<'a, 'py>
sourcepub fn new(
from: &'a Bound<'py, PyAny>,
to: impl Into<Cow<'static, str>>,
) -> Self
pub fn new( from: &'a Bound<'py, PyAny>, to: impl Into<Cow<'static, str>>, ) -> Self
Create a new PyDowncastError
representing a failure to convert the object
from
into the type named in to
.
pub(crate) fn new_from_borrowed( from: Borrowed<'a, 'py, PyAny>, to: impl Into<Cow<'static, str>>, ) -> Self
Trait Implementations§
source§impl<'a, 'py> Debug for DowncastError<'a, 'py>
impl<'a, 'py> Debug for DowncastError<'a, 'py>
source§impl Display for DowncastError<'_, '_>
impl Display for DowncastError<'_, '_>
source§impl Error for DowncastError<'_, '_>
impl Error for DowncastError<'_, '_>
1.30.0 · source§fn source(&self) -> Option<&(dyn Error + 'static)>
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
source§#[doc(hidden)] fn type_id(&self, _: Internal) -> TypeIdwhere
Self: 'static,
#[doc(hidden)] fn type_id(&self, _: Internal) -> TypeIdwhere
Self: 'static,
🔬This is a nightly-only experimental API. (
error_type_id
)Gets the
TypeId
of self
.1.0.0 · source§fn description(&self) -> &str
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
source§impl From<DowncastError<'_, '_>> for PyErr
impl From<DowncastError<'_, '_>> for PyErr
Convert DowncastError
to Python TypeError
.
source§fn from(err: DowncastError<'_, '_>) -> PyErr
fn from(err: DowncastError<'_, '_>) -> PyErr
Converts to this type from the input type.
Auto Trait Implementations§
impl<'a, 'py> Freeze for DowncastError<'a, 'py>
impl<'a, 'py> !RefUnwindSafe for DowncastError<'a, 'py>
impl<'a, 'py> !Send for DowncastError<'a, 'py>
impl<'a, 'py> !Sync for DowncastError<'a, 'py>
impl<'a, 'py> Unpin for DowncastError<'a, 'py>
impl<'a, 'py> !UnwindSafe for DowncastError<'a, 'py>
Blanket Implementations§
source§impl<T> AssertNotZeroSized for T
impl<T> AssertNotZeroSized for T
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more