code: def find_file(path, search_path):
      
  
      if isinstance(search_path, str):
          search_path = [search_path]
      for relative in search_path:
          candidate = os.path.normpath(os.path.join(relative, path))
          if os.path.isfile(candidate):
              return candidate
  
      return None
docs: Find a file by relative path. Arguments:
  
      path -- the image's filename
      search_path -- a list of directories to check in
  
      Returns: the resolved file path