splitter.py

from collections import defaultdict

f = open('input_list2.txt')
line = f.readline()
APVs=[]
while line:
    line = f.readline()
    if not line.startswith("FED"):
        APVs.append(line.rstrip('\n'))
f.close()

addresses=[]
for APV in APVs:
    address=APV.replace("DetId","").replace("APV","").split("_")
    addresses.append(address)

addresses.pop()

d = defaultdict(list)
DetIds=[]
for entry in addresses:
    #print entry[0],entry[1]                                                                                                                                                                                
    the_det = entry[0]
    d[the_det].append(entry[1])
    if the_det not in DetIds:
        DetIds.append(the_det)


template = """                                                                                                                                                                                              
    cms.PSet(                                                                                                                                                                                               
        DetId = cms.uint32({}),                                                                                                                                                                             
        APVs = cms.vuint32({}),                                                                                                                                                                             
        ),"""

for k,value in d.iteritems():
    s=''
    for apv in value:
        s += apv+","
    print template.format(k,s.rstrip(","))