How to delete a previous row while reading a row of a csv file by python3

Question

I want to clean-up 12,000 wiki pages from this wiki category. For that, i am having all the 12,000 wikipages in a csv file. When my code runs, it modifies the page, one by one. How can i delete a previous row while reading a (next) row of a CSV file by python3 ? If it is possible, it will be easy to share the remaining rows of the csv file to another wiki contributor. Otherwise, i should manually open the csv file to delete 'the completed rows'.

My code as simplified;-

import csv
import pywikibot

with open('0.csv', 'r') as csvfile:
    reader = csv.reader(csvfile,delimiter="~")
    for row in reader:
    #if len(row) == 8:
        wikiPage1 = row[0]
        indexPages = row[5]
        print (wikiPage1)

        site = pywikibot.Site('ta', 'wiktionary')
        page1 = pywikibot.Page(site, wikiPage1)

        page1.text = page1.text.replace('Number','எண்')
        page1.save(summary=''Number --> எண்') 

Answer 1

I learned from two web pages page-1, page-2 of this site.

The below code do this target;-

#-*- coding: utf-8 -*-

#bringing the needed library modules
import csv, time, subprocess

#subprocess.call("sed -i `` 1d 0-123.csv",shell=True)

WAIT_TIME = 10
with open('0-123.csv', 'r') as csvfile:
    reader = csv.reader(csvfile,delimiter="~")
    for row in reader:
#removing the first line of the csv        
        subprocess.call("sed -i `` 1d 0-123.csv",shell=True)
        wiktHeader1 = row[0]#.decode('utf-8')
        print ()
        print (wiktHeader1 + ' = படி-1: விக்சனரியின் தலைப்புச்சொல்.')
        time.sleep(WAIT_TIME)