(self, msg, line=None)
Print (to stderr) a warning message tied to the current logical
           line in the current file.  If the current logical line in the
           file spans multiple physical lines, the warning refers to the
           whole range, eg. "lines 3-5".  If 'line' supplied, it overrides
           the current line number; it may be a list or tuple to indicate a
           range of physical lines, or an integer for a single physical
           line.
Print (to stderr) a warning message tied to the current logical
           line in the current file.  If the current logical line in the
           file spans multiple physical lines, the warning refers to the
           whole range, eg. "lines 3-5".  If 'line' supplied, it overrides
           the current line number; it may be a list or tuple to indicate a
           range of physical lines, or an integer for a single physical
           line.
Print ( to stderr ) a warning message tied to the current logical line in the current file . If the current logical line in the file spans multiple physical lines the warning refers to the whole range eg . lines 3 - 5 . If line supplied it overrides the current line number ; it may be a list or tuple to indicate a range of physical lines or an integer for a single physical line .
def warn(self, msg, line=None):
        """Print (to stderr) a warning message tied to the current logical
           line in the current file.  If the current logical line in the
           file spans multiple physical lines, the warning refers to the
           whole range, eg. "lines 3-5".  If 'line' supplied, it overrides
           the current line number; it may be a list or tuple to indicate a
           range of physical lines, or an integer for a single physical
           line."""
        sys.stderr.write("warning: " + self.gen_error(msg, line) + "\n")
def warn ( self , msg , line = None ) : sys . stderr . write ( "warning: " + self . gen_error ( msg , line ) + "\n" )