code: def exists_or_mkdir(path, verbose=True):
      
      if not os.path.exists(path):
          if verbose:
              logging.info("[*] creates %s ..." % path)
          os.makedirs(path)
          return False
      else:
          if verbose:
              logging.info("[!] %s exists ..." % path)
          return True
docs: Check a folder by given name, if not exist, create the folder and return False,
      if directory exists, return True.
  
      Parameters
      ----------
      path : str
          A folder path.
      verbose : boolean
          If True (default), prints results.
  
      Returns
      --------
      boolean
          True if folder already exist, otherwise, returns False and create the folder.
  
      Examples
      --------
      >>> tl.files.exists_or_mkdir("checkpoints/train")