Struct PyString

pub struct PyString(/* private fields */);

Represents a Python string (a Unicode string object).

Values of this type are accessed via PyO3’s smart pointers, e.g. as Py<PyString> or Bound<'py, PyString>.

For APIs available on str objects, see the PyStringMethods trait which is implemented for Bound<'py, PyString>.

Equality

For convenience, [Bound<'py, PyString>] implements PartialEq<str> to allow comparing the data in the Python string to a Rust UTF-8 string slice.

This is not always the most appropriate way to compare Python strings, as Python string subclasses may have different equality semantics. In situations where subclasses overriding equality might be relevant, use PyAnyMethods::eq, at cost of the additional overhead of a Python method call.

use pyo3::types::PyString;

let py_string = PyString::new(py, "foo");
// via PartialEq<str>
assert_eq!(py_string, "foo");

// via Python equality
assert!(py_string.as_any().eq("foo").unwrap());

Implementations

impl PyString

pub fn new<'py>(py: Python<'py>, s: &str) -> Bound<'py, PyString>

Creates a new Python string object.

Panics if out of memory.

pub fn new_bound<'py>(py: Python<'py>, s: &str) -> Bound<'py, PyString>

👎Deprecated since 0.23.0: renamed to PyString::new

Deprecated name for PyString::new.

pub fn intern<'py>(py: Python<'py>, s: &str) -> Bound<'py, PyString>

Intern the given string

This will return a reference to the same Python string object if called repeatedly with the same string.

Note that while this is more memory efficient than PyString::new_bound, it unconditionally allocates a temporary Python string object and is thereby slower than PyString::new_bound.

Panics if out of memory.

pub fn intern_bound<'py>(py: Python<'py>, s: &str) -> Bound<'py, PyString>

👎Deprecated since 0.23.0: renamed to PyString::intern

Deprecated name for PyString::intern.

pub fn from_object<'py>( src: &Bound<'py, PyAny>, encoding: &str, errors: &str, ) -> PyResult<Bound<'py, PyString>>

Attempts to create a Python string from a Python bytes-like object.

pub fn from_object_bound<'py>( src: &Bound<'py, PyAny>, encoding: &str, errors: &str, ) -> PyResult<Bound<'py, PyString>>

👎Deprecated since 0.23.0: renamed to PyString::from_object

Deprecated name for PyString::from_object.

Trait Implementations

impl AsRef<PyAny> for PyString

fn as_ref(&self) -> &PyAny

Converts this type into a shared reference of the (usually inferred) input type.

impl Deref for PyString

type Target = PyAny

The resulting type after dereferencing.

fn deref(&self) -> &PyAny

Dereferences the value.

impl PyTypeInfo for PyString

const NAME: &'static str = "PyString"

Class name.

const MODULE: Option<&'static str> = _

Module name, if any.

fn type_object_raw(py: Python<'_>) -> *mut PyTypeObject

Returns the PyTypeObject instance for this type.

fn is_type_of_bound(obj: &Bound<'_, PyAny>) -> bool

👎Deprecated since 0.23.0: renamed to PyTypeInfo::is_type_of

Deprecated name for PyTypeInfo::is_type_of.

fn type_object(py: Python<'_>) -> Bound<'_, PyType>

Returns the safe abstraction over the type object.

fn type_object_bound(py: Python<'_>) -> Bound<'_, PyType>

👎Deprecated since 0.23.0: renamed to PyTypeInfo::type_object

Deprecated name for PyTypeInfo::type_object.

fn is_type_of(object: &Bound<'_, PyAny>) -> bool

Checks if object is an instance of this type or a subclass of this type.

fn is_exact_type_of(object: &Bound<'_, PyAny>) -> bool

Checks if object is an instance of this type.

fn is_exact_type_of_bound(object: &Bound<'_, PyAny>) -> bool

👎Deprecated since 0.23.0: renamed to PyTypeInfo::is_exact_type_of

Deprecated name for PyTypeInfo::is_exact_type_of.

impl DerefToPyAny for PyString