fix encode batch fast as well

bindings/python/src/tokenizer.rs

@@ -1092,25 +1092,24 @@ impl PyTokenizer {
     fn encode_batch_fast(
         &self,
         py: Python<'_>,
-        input: Bound<'_, PyList>,
+        input: Bound<'_, PySequence>,
         is_pretokenized: bool,
         add_special_tokens: bool,
     ) -> PyResult<Vec<PyEncoding>> {
-        let input: Vec<tk::EncodeInput> = input
-            .into_iter()
-            .map(|o| {
-                let input: tk::EncodeInput = if is_pretokenized {
-                    o.extract::<PreTokenizedEncodeInput>()?.into()
-                } else {
-                    o.extract::<TextEncodeInput>()?.into()
-                };
-                Ok(input)
-            })
-            .collect::<PyResult<Vec<tk::EncodeInput>>>()?;
+        let mut items = Vec::<tk::EncodeInput>::new();
+        for i in 0..input.len()? {
+            let item = input.get_item(i)?;
+            let item: tk::EncodeInput = if is_pretokenized {
+                item.extract::<PreTokenizedEncodeInput>()?.into()
+            } else {
+                item.extract::<TextEncodeInput>()?.into()
+            };
+            items.push(item);
+        }
         py.allow_threads(|| {
             ToPyResult(
                 self.tokenizer
-                    .encode_batch_fast(input, add_special_tokens)
+                    .encode_batch_fast(items, add_special_tokens)
                     .map(|encodings| encodings.into_iter().map(|e| e.into()).collect()),
             )
             .into()