_utils.py 文件源码

def _environ_cols_linux(fp):  # pragma: no cover

  # import os
  # if fp is None:
  #   try:
  #     fp = os.open(os.ctermid(), os.O_RDONLY)
  #   except:
  #     pass
  try:
    from termios import TIOCGWINSZ
    from fcntl import ioctl
    from array import array
  except ImportError:
    return None
  else:
    try:
      return array('h', ioctl(fp, TIOCGWINSZ, '\0' * 8))[1]
    except:
      try:
        from os.environ import get
      except ImportError:
        return None
      else:
        return int(get('COLUMNS', 1)) - 1