Struct cpython::PySequence

pub struct PySequence(_);

Represents a reference to a python object supporting the sequence protocol.

Methods

impl PySequence

pub fn len(&self, py: Python) -> PyResult<isize>

Returns the number of objects in sequence. This is equivalent to Python len().

pub fn concat(&self, py: Python, other: &PySequence) -> PyResult<PyObject>

Return the concatenation of o1 and o2. Equivalent to python o1 + o2

pub fn repeat(&self, py: Python, count: isize) -> PyResult<PyObject>

Return the result of repeating sequence object o count times. Equivalent to python o * count NB: Python accepts negative counts; it returns an empty Sequence.

pub fn in_place_concat(     &self,     py: Python,     other: &PySequence ) -> PyResult<PyObject>

Return the concatenation of o1 and o2 on success. Equivalent to python o1 += o2

pub fn in_place_repeat(&self, py: Python, count: isize) -> PyResult<PyObject>

Return the result of repeating sequence object o count times. Equivalent to python o *= count NB: Python accepts negative counts; it empties the Sequence.

pub fn get_item(&self, py: Python, index: isize) -> PyResult<PyObject>

Return the ith element of the Sequence. Equivalent to python o[index]

pub fn get_slice(     &self,     py: Python,     begin: isize,     end: isize ) -> PyResult<PyObject>

Return the slice of sequence object o between begin and end. This is the equivalent of the Python expression o[begin:end]

pub fn set_item(&self, py: Python, i: isize, v: &PyObject) -> PyResult<()>

Assign object v to the ith element of o. Equivalent to Python statement o[i] = v

pub fn del_item(&self, py: Python, i: isize) -> PyResult<()>

Delete the ith element of object o. Python statement del o[i]

pub fn set_slice(     &self,     py: Python,     i1: isize,     i2: isize,     v: &PyObject ) -> PyResult<()>

Assign the sequence object v to the slice in sequence object o from i1 to i2. This is the equivalent of the Python statement o[i1:i2] = v

pub fn del_slice(&self, py: Python, i1: isize, i2: isize) -> PyResult<()>

Delete the slice in sequence object o from i1 to i2. equivalent of the Python statement del o[i1:i2]

pub fn count<V>(&self, py: Python, value: V) -> PyResult<usize> where     V: ToPyObject,

Return the number of occurrences of value in o, that is, return the number of keys for which o[key] == value

pub fn contains<V>(&self, py: Python, value: V) -> PyResult<bool> where     V: ToPyObject,

Determine if o contains value. this is equivalent to the Python expression value in o

pub fn index<V>(&self, py: Python, value: V) -> PyResult<usize> where     V: ToPyObject,

Return the first index i for which o[i] == value. This is equivalent to the Python expression o.index(value)

pub fn list(&self, py: Python) -> PyResult<PyList>

Return a fresh list based on the Sequence.

pub fn tuple(&self, py: Python) -> PyResult<PyTuple>

Return a fresh tuple based on the Sequence.

pub fn iter<'p>(&self, py: Python<'p>) -> PyResult<PyIterator<'p>>

Trait Implementations

impl ToPyObject for PySequence

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

type ObjectType = PySequence

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

Converts self into a Python object.

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

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 PySequence

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

Extracts Self from the source PyObject.

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

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

Extracts Self from the source PyObject.

impl PythonObject for PySequence

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 PySequence

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

Cast from PyObject to a concrete Python object type.