Struct PythonRequirement 

pub struct PythonRequirement { /* private fields */ }

Implementations

impl PythonRequirement

pub fn from_python_version( interpreter: &Interpreter, python_version: &PythonVersion, ) -> Self

Create a PythonRequirement to resolve against both an Interpreter and a PythonVersion.

pub fn from_requires_python( interpreter: &Interpreter, requires_python: RequiresPython, ) -> Self

Create a PythonRequirement to resolve against both an Interpreter and a MarkerEnvironment.

pub fn from_interpreter(interpreter: &Interpreter) -> Self

Create a PythonRequirement to resolve against an Interpreter.

pub fn from_marker_environment( marker_env: &MarkerEnvironment, requires_python: RequiresPython, ) -> Self

Create a PythonRequirement from a MarkerEnvironment and a specific Requires-Python directive.

This has the same “source” as PythonRequirement::from_requires_python, but is useful for constructing a PythonRequirement without an Interpreter.

pub fn narrow(&self, target: &RequiresPythonRange) -> Option<Self>

Narrow the PythonRequirement to the given version, if it’s stricter (i.e., greater) than the current Requires-Python minimum.

Returns None if the given range is not narrower than the current range.

pub fn split(&self, at: Bound<Version>) -> Option<(Self, Self)>

Split the PythonRequirement at the given version.

For example, if the current requirement is >=3.10, and the split point is 3.11, then the result will be >=3.10 and <3.11 and >=3.11.

pub fn raises(&self, target: &RequiresPythonRange) -> bool

Returns true if the minimum version of Python required by the target is greater than the installed version.

pub fn exact(&self) -> &Version

Return the exact version of Python.

pub fn installed(&self) -> &RequiresPython

Return the installed version of Python.

pub fn target(&self) -> &RequiresPython

Return the target version of Python.

pub fn source(&self) -> PythonRequirementSource

Return the source of the PythonRequirement.

pub fn to_marker_tree(&self) -> MarkerTree

Return a MarkerTree representing the Python requirement.

See: RequiresPython::to_marker_tree

Trait Implementations

impl Clone for PythonRequirement

fn clone(&self) -> PythonRequirement

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PythonRequirement

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

Formats the value using the given formatter.

impl PartialEq for PythonRequirement

fn eq(&self, other: &PythonRequirement) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for PythonRequirement

impl StructuralPartialEq for PythonRequirement