Nv_NODE_DATE_TIME

Nv_stats_172550_160211_230030
Nv_stats_172550_160212_142624
Nv_stats_75AKPD0_160211_230030
Nv_stats_75AKPD0_160212_142624

Nv_stats_172550_160211_230030
Nv_stats_75AKPD0_160212_142624
Nv_stats_172550_160211_230030
Nv_stats_75AKPD0_160212_142624

import os

iostatslocalpath="/root/svc/testing/"
svchost='SVC_Cluster01'
nodenames=['75AKMX0', '75AKPD0', '172550', '172561']

filelist=sorted(os.listdir(iostatslocalpath+svchost+'/.'))
totalfilenumber=len(filelist)

def parse(filename, length):
        print filename[0]
        print test[length-1]

for nodename in nodenames:
        test=[]
        test[:]=[]
        for file in filelist:
                if nodename and "Nv" in file:
                        test.append(file)
        parse(test, len(test))