示例代码如下：
import sys
from hadoop.io import SequenceFile
if __name__ == '__main__':
if len(sys.argv) < 3:
print 'usage: SequenceFileReader <filename> <output>'
else:
reader = SequenceFile.Reader(sys.argv[1])
key_class = reader.getKeyClass()
value_class = reader.getValueClass()
key = key_class()
value = value_class()
#reader.sync(4042)
position = reader.getPosition()
f = open(sys.argv[2],'w')
while reader.next(key, value):
f.write(value.toString()+'\n')
reader.close()
f.close()
参考链接:https://stackoverflow.com/questions/33684625/how-to-load-data-from-hdfs-sequencefile-in-python
python读取更多hadoop文件格式，如:ArrayFile,MapFile,SetFile等，可以参见:https://github.com/matteobertozzi/Hadoop
