Struct cpython::PyFloat

pub struct PyFloat(_);

Represents a Python float object.

You can usually avoid directly working with this type by using ToPyObject and extract with f32/f64.

Methods

impl PyFloat

pub fn new(py: Python, val: c_double) -> PyFloat

Creates a new Python float object.

pub fn value(&self, _py: Python) -> c_double

Gets the value of this float.

Trait Implementations

impl ToPyObject for PyFloat

Identity conversion: allows using existing PyObject instances where T: ToPyObject is expected.

type ObjectType = PyFloat

fn to_py_object(&self, py: Python) -> PyFloat

Converts self into a Python object.

fn into_py_object(self, _py: Python) -> PyFloat

Converts self into a Python object.

fn with_borrowed_ptr<F, R>(&self, _py: Python, f: F) -> R where     F: FnOnce(*mut PyObject) -> R,

Converts self into a Python object and calls the specified closure on the native FFI pointer underlying the Python object.

impl<'source> FromPyObject<'source> for PyFloat

fn extract(py: Python, obj: &'source PyObject) -> PyResult<PyFloat>

Extracts Self from the source PyObject.

impl<'source> FromPyObject<'source> for &'source PyFloat

fn extract(py: Python, obj: &'source PyObject) -> PyResult<&'source PyFloat>

Extracts Self from the source PyObject.

impl PythonObject for PyFloat

fn as_object(&self) -> &PyObject

Casts the Python object to PyObject.

fn into_object(self) -> PyObject

Casts the Python object to PyObject.

unsafe fn unchecked_downcast_from(obj: PyObject) -> Self

Unchecked downcast from PyObject to Self. Undefined behavior if the input object does not have the expected type.

Important traits for &'a mut R

impl<'a, R> Read for &'a mut R where
    R: Read + ?Sized, impl<'a, W> Write for &'a mut W where
    W: Write + ?Sized, impl<'a, I> Iterator for &'a mut I where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;

unsafe fn unchecked_downcast_borrow_from<'a>(obj: &'a PyObject) -> &'a Self

Unchecked downcast from PyObject to Self. Undefined behavior if the input object does not have the expected type.

impl PythonObjectWithCheckedDowncast for PyFloat

fn downcast_from<'p>(     py: Python<'p>,     obj: PyObject ) -> Result<PyFloat, PythonObjectDowncastError<'p>>

Cast from PyObject to a concrete Python object type.

fn downcast_borrow_from<'a, 'p>(     py: Python<'p>,     obj: &'a PyObject ) -> Result<&'a PyFloat, PythonObjectDowncastError<'p>>

Cast from PyObject to a concrete Python object type.

impl PythonObjectWithTypeObject for PyFloat

fn type_object(py: Python) -> PyType

Retrieves the type object for this Python object type.