add readme

README.md

@@ -0,0 +1,16 @@
+# FSRS-RS-Python
+
+Python bindings for fsrs-rs, use burn-rs, instead of pytorch.
+
+---
+
+## Usage
+
+see [example.py](./example.py)
+
+## Development
+
+```bash
+maturin develop
+python example.py
+```

src/lib.rs

@@ -8,7 +8,7 @@ impl FSRS {
     pub fn new() -> Self {
         Self(fsrs::FSRS::new(Some(&[])).unwrap())
     }
-    #[pyo3(signature=(current_memory_state,desired_retention,days_elapsed ))]
+    #[pyo3(signature=(current_memory_state,desired_retention,days_elapsed))]
     pub fn next_states(
         &self,
         current_memory_state: Option<MemoryState>,