code: def sqlite3_find_tool():
      
  
      # find sqlite3
      path = os.environ.get("PATH", None)
      if path is None:
          path = "/usr/local/bin:/usr/bin:/bin"
  
      sqlite3_path = None
      dirs = path.split(":")
      for pathdir in dirs:
          if len(pathdir) == 0:
              continue
  
          sqlite3_path = os.path.join(pathdir, 'sqlite3')
          if not os.path.exists(sqlite3_path):
              continue
  
          if not os.path.isfile(sqlite3_path):
              continue
  
          if not os.access(sqlite3_path, os.X_OK):
              continue
  
          break
  
      if sqlite3_path is None:
          log.error("Could not find sqlite3 binary")
          return None
  
      return sqlite3_path
docs: Find the sqlite3 binary
      Return the path to the binary on success
      Return None on error