[Refactor] Separate Logics directory.

src-ui/logics/useStdoutToPython.js

@@ -0,0 +1,17 @@
+import { store } from "@store";
+
+export const useStdoutToPython = () => {
+    const asyncStdoutToPython = async (value) => {
+        // send to python
+        const backend_subprocess = store.backend_subprocess;
+        if (backend_subprocess) {
+            await backend_subprocess.write(JSON.stringify(value) + "\n").then(() => {
+            }).catch((err) => {
+                console.log(err);
+            });
+        } else {
+            console.error("Backend subprocess is not found.", backend_subprocess);
+        }
+    };
+    return { asyncStdoutToPython };
+};