Method skip_while

pye.py:439–443

(self, s, pos, zap, way)

            pos += way
        return pos
    def skip_while(self, s, pos, zap, way):
        stop = -1 if way < 0 else len(s)
        while pos != stop and self.issymbol(s[pos], zap):
            pos += way
        return pos
    def move_up(self):
        if self.cur_line > 0:
            self.cur_line -= 1