我有一个看起来像这样的csv文件:
TEST
2012-05-01 00:00:00.203 ON 1
2012-05-01 00:00:11.203 OFF 0
2012-05-01 00:00:22.203 ON 1
2012-05-01 00:00:33.203 OFF 0
2012-05-01 00:00:44.203 OFF 0
TEST
2012-05-02 00:00:00.203 OFF 0
2012-05-02 00:00:11.203 OFF 0
2012-05-02 00:00:22.203 OFF 0
2012-05-02 00:00:33.203 OFF 0
2012-05-02 00:00:44.203 ON 1
2012-05-02 00:00:55.203 OFF 0
并且无法摆脱"TEST"字符串.
是否可以检查一行是否以日期开头并且只读那些行？