def mill(it, label='', hide=None, expected_size=None, every=1):
 def _mill_char(_i):
  if (_i >= count):
   return ' '
  else:
   return MILL_CHARS[((_i // every) % len(MILL_CHARS))]
 def _show(_i):
  if (not hide):
   if (((_i % every) == 0) or (_i == count)):
    STREAM.write((MILL_TEMPLATE % (label, _mill_char(_i), _i, count)))
    STREAM.flush()
 count = (len(it) if (expected_size is None) else expected_size)
 if count:
  _show(0)
 for (i, item) in enumerate(it):
  (yield item)
  _show((i + 1))
 if (not hide):
  STREAM.write('\n')
  STREAM.flush()

def mill ( it , label = '' , hide = None , expected_size = None , every = 1 ) : def _mill_char ( _i ) : if ( _i >= count ) : return ' ' else : return MILL_CHARS [ ( ( _i // every ) % len ( MILL_CHARS ) ) ] def _show ( _i ) : if ( not hide ) : if ( ( ( _i % every ) == 0 ) or ( _i == count ) ) : STREAM . write ( ( MILL_TEMPLATE % ( label , _mill_char ( _i ) , _i , count ) ) ) STREAM . flush ( ) count = ( len ( it ) if ( expected_size is None ) else expected_size ) if count : _show ( 0 ) for ( i , item ) in enumerate ( it ) : ( yield item ) _show ( ( i + 1 ) ) if ( not hide ) : STREAM . write ( '\n' ) STREAM . flush ( )
progress iterator .