idcheck.py

#!/usr/bin/env python3
import csv
import sys

firstdata = {}
with open(sys.argv[1],"r") as csvfile1:
  reader1=csv.reader(csvfile1,delimiter=" ")
  for line in reader1:
    firstdata[line[4]]=line[2]
with open(sys.argv[2],"r") as csvfile2:
  reader2=csv.reader(csvfile2,delimiter=" ")
  for line in reader2:
    if line[4] in firstdata:
      if firstdata[line[4]] != line[2]:
        print(line[4],":",line[2],"does not match",line[4],firstdata[line[4]])