chore(python): minor changes

src/ffi/python/client.rs

@@ -10,7 +10,7 @@ use pyo3::prelude::*;
 #[pymethods]
 impl Client {
 	#[new]
-	fn pyconnect(host: String, username: String, password: String) -> crate::Result<Self> {
+	fn __new__(host: String, username: String, password: String) -> crate::Result<Self> {
 		super::tokio().block_on(async move { Client::new(host, username, password).await })
 	}
 

src/ffi/python/controllers.rs

@@ -96,10 +96,10 @@ impl Cursor {
 	}
 
 	#[getter(user)]
-	fn pyuser(&self) -> String {
+	fn pyuser(&self) -> Option<String> {
 		match self.user {
-			Some(user) => user.to_string(),
-			None => "".to_string(),
+			Some(user) => Some(user.to_string()),
+			None => None,
 		}
 	}
 }

src/ffi/python/mod.rs

@@ -25,7 +25,8 @@ fn tokio() -> &'static tokio::runtime::Runtime {
 	RT.get_or_init(|| tokio::runtime::Runtime::new().unwrap())
 }
 
-// workaround to allow the GIL to be released across awaits
+// workaround to allow the GIL to be released across awaits, waiting on
+// https://github.com/PyO3/pyo3/pull/3610
 struct AllowThreads<F>(F);
 
 impl<F> Future for AllowThreads<F>