Splitting large text file into smaller text files by line numbers using Python

Question

I have a text file say really_big_file.txt that contains:

line 1
line 2
line 3
line 4
...
line 99999
line 100000

I would like to write a Py

Answer 1

import csv
import os
import re

MAX_CHUNKS = 300


def writeRow(idr, row):
    with open("file_%d.csv" % idr, 'ab') as file:
        writer = csv.writer(file, delimiter=',', quotechar='\"', quoting=csv.QUOTE_ALL)
        writer.writerow(row)

def cleanup():
    for f in os.listdir("."):
        if re.search("file_.*", f):
            os.remove(os.path.join(".", f))

def main():
    cleanup()
    with open("large_file.csv", 'rb') as results:
        r = csv.reader(results, delimiter=',', quotechar='\"')
        idr = 1
        for i, x in enumerate(r):
            temp = i + 1
            if not (temp % (MAX_CHUNKS + 1)):
                idr += 1
            writeRow(idr, x)

if __name__ == "__main__": main()