code: def format_pct(self) -> str:
      return f"{int(self.pct * 100): 4}%"[1:]
  
imports: import contextlib
  import math
  import os
  import sys
  import time
  import typing
  from gettext import gettext
  from io import StringIO
  from types import TracebackType
  from ._compat import _default_text_stdout
  from ._compat import CYGWIN
  from ._compat import get_best_encoding
  from ._compat import isatty
  from ._compat import open_stream
  from ._compat import strip_ansi
  from ._compat import term_len
  from ._compat import WIN
  from .exceptions import ClickException
  from .utils import echo
label_desc: Use image node_id 12 for calling the ProgressBar obj's underlying member method code with example usage: obj.format_pct() and returns: int, str