class_docstr: This is a simple wrapper around tqdm that includes a starting delay before printing.
      
code: def __init__(self, iterable, total, desc, silent, start_delay):
      self.iter = iter(iterable)
      self.start_time = time.time()
      self.pbar = None
      self.total = total
      self.desc = desc
      self.start_delay = start_delay
      self.silent = silent
      self.unshown_count = 0
  
imports: import time
  import tqdm
label_desc: Use image node_id 1 to create a new ShowProgress object  with example: obj = ShowProgress(iterable, total, desc, silent, start_delay)