Python-CSV文件中列的计数器

Question

I'm auditing a SecurityLog CSV file and I have to count the most common event ID number for both the "audit Successes" and "audit failures. I can find the most occurring event ID for the whole file but not for each one. My script isn't the most efficient or perfect, but I can't find any way to do this.

import csv
from collections import Counter
with open('SecLog.csv') as csvfile:    #Open Security Log
    readCSV = csv.reader(csvfile, delimiter=',')


    data = list(readCSV) #to get number of entries in entire log
    row_count=len(data)-1

    data = open('SecLog.csv').read()
    SucCount = data.count('Success') #counts the occurences of "Successes"
    FailCount = data.count('Failure') #counts the occurences of "failures"

    print "Number of Audit Failures:", FailCount, "Failures of", row_count, "entries"
    print "Number of Audit Successes:", SucCount,"Successes of", row_count, "entries"

SECURITY LOG: Keywords,Date and Time,Source,Event ID,Task Category Audit Success,3/1/2018 4:52:36 PM,Microsoft-Windows-Security-Auditing,4798,User Account Management,"A user's local group membership was enumerated.

Subject: Security ID: DESKTOP-1PQOUT8\\Mack Naylor Account Name: Mack Naylor Account Domain: DESKTOP-1PQOUT8 Logon ID: 0x26723

User: Security ID: DESKTOP-1PQOUT8\\Mack Naylor Account Name: Mack Naylor Account Domain: DESKTOP-1PQOUT8

Process Information: Process ID: 0x1e14 Process Name: C:\\Windows\\System32\\mmc.exe" Audit Success,3/1/2018 4:52:10 PM,Microsoft-Windows-Security-Auditing,4798,User Account Management,"A user's local group membership was enumerated.

Subject: Security ID: DESKTOP-1PQOUT8\\Mack Naylor Account Name: Mack Naylor Account Domain: DESKTOP-1PQOUT8 Logon ID: 0x26723

User: Security ID: DESKTOP-1PQOUT8\\Mack Naylor Account Name: Mack Naylor Account Domain: DESKTOP-1PQOUT8

Process Information: Process ID: 0x1e14 Process Name: C:\\Windows\\System32\\mmc.exe" Audit Success,3/1/2018 4:51:41 PM,Microsoft-Windows-Security-Auditing,4672,Special Logon,"Special privileges assigned to new logon.

Subject: Security ID: SYSTEM Account Name: SYSTEM Account Domain: NT AUTHORITY Logon ID: 0x3E7

Privileges: SeAssignPrimaryTokenPrivilege SeTcbPrivilege SeSecurityPrivilege

Answer 1

If you know how to find the most occuring event ID for the whole file, why not sort the CSV by successes/failures and then split to two datasets. Then you can find the most occuring event ID by the same aforementioned method for each dataset respectively.