fix: default value

Author: shenxiangzhuang

bindings/python/py_src/tokenizers/trainers/__init__.pyi

@@ -45,6 +45,20 @@ class BpeTrainer(Trainer):
             highly repetitive tokens like `======` for wikipedia
 
     """
+    def __init__(
+        self,
+        vocab_size=30000,
+        min_frequency=0,
+        show_progress=True,
+        special_tokens=[],
+        limit_alphabet=None,
+        initial_alphabet=[],
+        continuing_subword_prefix=None,
+        end_of_word_suffix=None,
+        max_token_length=None,
+        words={},
+    ):
+        pass
 
 class UnigramTrainer(Trainer):
     """
@@ -109,6 +123,8 @@ class WordLevelTrainer(Trainer):
         special_tokens (:obj:`List[Union[str, AddedToken]]`):
             A list of special tokens the model should know of.
     """
+    def __init__(self, vocab_size=30000, min_frequency=0, show_progress=True, special_tokens=None):
+        pass
 
 class WordPieceTrainer(Trainer):
     """

bindings/python/src/trainers.rs

@@ -664,7 +664,7 @@ impl PyWordLevelTrainer {
     #[new]
     #[pyo3(
         signature = (**kwargs), 
-        text_signature = "(self, vocab_size=3000, min_frequency=0, show_progress=True, special_tokens=[])"
+        text_signature = "(self, vocab_size=30000, min_frequency=0, show_progress=True, special_tokens=None)"
     )]
     pub fn new(kwargs: Option<&Bound<'_, PyDict>>) -> PyResult<(Self, PyTrainer)> {
         let mut builder = tk::models::wordlevel::WordLevelTrainer::builder();