code: def clear_cache(filename: str = None):
      """Clear the cache"""
      cache = Cache(filename or "cache_db")
      cache.clear()
  
imports: import importlib.metadata
  from .smart_dataframe import SmartDataframe
  from .smart_datalake import SmartDatalake
  from .helpers.cache import Cache
  from .agent import Agent
  from .skills import skill
label_desc: Use image node_id 1 for calling a global function with example usage: clear_cache(filename) without return types