docs: Include example of calling with PyDict for kwargs (PyO3#5078)

* Include example of calling with PyDict for kwargs

Resolve PyO3#1462

* remove empty line

---------

Co-authored-by: Icxolu <[email protected]>

Author: prutschman-iv

guide/src/python-from-rust/function-calls.md

@@ -59,13 +59,13 @@ fn main() -> PyResult<()> {
 
 ## Creating keyword arguments
 
-For the `call` and `call_method` APIs, `kwargs` are `Option<&Bound<'py, PyDict>>`, so can either be `None` or `Some(&dict)`. You can use the [`IntoPyDict`]({{#PYO3_DOCS_URL}}/pyo3/types/trait.IntoPyDict.html) trait to convert other dict-like containers, e.g. `HashMap` or `BTreeMap`, as well as tuples with up to 10 elements and `Vec`s where each element is a two-element tuple.
+For the `call` and `call_method` APIs, `kwargs` are `Option<&Bound<'py, PyDict>>`, so can either be `None` or `Some(&dict)`. You can use the [`IntoPyDict`]({{#PYO3_DOCS_URL}}/pyo3/types/trait.IntoPyDict.html) trait to convert other dict-like containers, e.g. `HashMap` or `BTreeMap`, as well as tuples with up to 10 elements and `Vec`s where each element is a two-element tuple. To pass keyword arguments of different types, construct a `PyDict` object.
 
 ```rust
 use pyo3::prelude::*;
-use pyo3::types::IntoPyDict;
+use pyo3::types::{PyDict, IntoPyDict};
 use std::collections::HashMap;
-use pyo3_ffi::c_str;
+use pyo3::ffi::c_str;
 
 fn main() -> PyResult<()> {
     let key1 = "key1";
@@ -102,7 +102,13 @@ fn main() -> PyResult<()> {
         kwargs.insert(key1, 1);
         fun.call(py, (), Some(&kwargs.into_py_dict(py)?))?;
 
+        // pass arguments of different types as PyDict
+        let kwargs = PyDict::new(py);
+        kwargs.set_item(key1, val1)?;
+        kwargs.set_item(key2, "string")?;
+        fun.call(py, (), Some(&kwargs))?;
+
         Ok(())
     })
 }
-```
+```