fix: removed tokenizer

Author: VinciGit00

scrapegraphai/utils/tokenizer.py

@@ -6,7 +6,6 @@
 from langchain_ollama import ChatOllama
 from langchain_mistralai import ChatMistralAI
 from langchain_core.language_models.chat_models import BaseChatModel
-from transformers import GPT2TokenizerFast
 
 def num_tokens_calculus(string: str, llm_model: BaseChatModel) -> int:
     """
@@ -24,13 +23,6 @@ def num_tokens_calculus(string: str, llm_model: BaseChatModel) -> int:
         from .tokenizers.tokenizer_ollama import num_tokens_ollama
         num_tokens_fn = num_tokens_ollama
 
-    elif isinstance(llm_model, GPT2TokenizerFast):
-        def num_tokens_gpt2(text: str, model: BaseChatModel) -> int:
-            tokenizer = GPT2TokenizerFast.from_pretrained("gpt2")
-            tokens = tokenizer.encode(text)
-            return len(tokens)
-        num_tokens_fn = num_tokens_gpt2
-
     else:
         from .tokenizers.tokenizer_openai import num_tokens_openai
         num_tokens_fn = num_tokens_openai

scrapegraphai/utils/tokenizers/tokenizer_ollama.py

@@ -3,7 +3,6 @@
 """
 from langchain_core.language_models.chat_models import BaseChatModel
 from ..logging import get_logger
-from transformers import GPT2TokenizerFast
 
 def num_tokens_ollama(text: str, llm_model:BaseChatModel) -> int:
     """
@@ -22,12 +21,8 @@ def num_tokens_ollama(text: str, llm_model:BaseChatModel) -> int:
 
     logger.debug(f"Counting tokens for text of {len(text)} characters")
 
-    if isinstance(llm_model, GPT2TokenizerFast):
-        tokenizer = GPT2TokenizerFast.from_pretrained("gpt2")
-        tokens = tokenizer.encode(text)
-        return len(tokens)
-
     # Use langchain token count implementation
     # NB: https://github.com/ollama/ollama/issues/1716#issuecomment-2074265507
     tokens = llm_model.get_num_tokens(text)
     return tokens
+