import csv
s='''Device,Serial Number,Realm,Vendor,Model,OS Image
ABBNWX0100,SMG3453ESDN,BlAH BLAH,Cisco,WS-C6509-E,"IOS 12.2(33)SXI9, s72033_rp-ADVENTERPRISEK9_WAN-M"
ABBNWX0101,SDG127343S0,BLAH BLAH,Cisco,WS-C4506-E,"IOS 12.2(53)SG8, cat4500-IPBASEK9-M"
ABBNWX0102,TREFDSFY1KK,BLAH BLAH,Cisco,WS-C3560V2-48PS-S,"IOS 12.2(55)SE5, C3560-IPBASEK9-M"'''
newtext=""
for row in csv.reader(s.split("\n")):
newtext+=','.join(row[:5])+","+str(row[5].split(",")[0])+"\n"
print(newtext)
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
Device,Serial Number,Realm,Vendor,Model,OS Image
ABBNWX0100,SMG3453ESDN,BlAH BLAH,Cisco,WS-C6509-E,IOS 12.2(33)SXI9
ABBNWX0101,SDG127343S0,BLAH BLAH,Cisco,WS-C4506-E,IOS 12.2(53)SG8
ABBNWX0102,TREFDSFY1KK,BLAH BLAH,Cisco,WS-C3560V2-48PS-S,IOS 12.2(55)SE5