Tagging (#4426)

### What problem does this PR solve?

#4367

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

rag/utils/__init__.py

@@ -71,11 +71,13 @@ def findMaxTm(fnm):
         pass
     return m
 
+
 tiktoken_cache_dir = get_project_base_directory()
 os.environ["TIKTOKEN_CACHE_DIR"] = tiktoken_cache_dir
 # encoder = tiktoken.encoding_for_model("gpt-3.5-turbo")
 encoder = tiktoken.get_encoding("cl100k_base")
 
+
 def num_tokens_from_string(string: str) -> int:
     """Returns the number of tokens in a text string."""
     try: