feat: add kwargs to stac-api python search (#591)

crates/api/CHANGELOG.md

@@ -6,6 +6,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+### Added
+
+- kwargs to Python search build ([#591](https://github.com/stac-utils/stac-rs/pull/591))
+
 ## [0.7.0] - 2025-01-02
 
 ### Added

crates/api/src/python.rs

@@ -23,6 +23,7 @@ pub fn search<'py>(
     sortby: Option<StringOrList>,
     filter: Option<StringOrDict<'py>>,
     query: Option<Bound<'py, PyDict>>,
+    kwargs: Option<Bound<'py, PyDict>>,
 ) -> PyResult<Search> {
     let mut fields = Fields::default();
     if let Some(include) = include {
@@ -58,7 +59,7 @@ pub fn search<'py>(
         .map(|filter| filter.into_cql2_json())
         .transpose()
         .map_err(Error::from)?;
-    let items = Items {
+    let mut items = Items {
         limit,
         bbox,
         datetime,
@@ -68,6 +69,9 @@ pub fn search<'py>(
         filter,
         ..Default::default()
     };
+    if let Some(kwargs) = kwargs {
+        items.additional_fields = pythonize::depythonize(&kwargs)?;
+    }
 
     let intersects = intersects
         .map(|intersects| match intersects {