AttributeError when trying to use seek() to get last row of csv file

Question

I am trying to return the last row from a csv file. I am modifying another function that I wrote previously that returns the last line from a text file. It seemed to work

Answer 1

csv reader not support seek, so you can get csv file last line as text file, then process last line as csv. In your code, if last line length > distance, then will get only part of last line.

import os

def get_last_line(fin):
    line_len = 80
    fin.seek(0, os.SEEK_END)
    file_size = fin.tell()
    while True:
        line_len = min(line_len * 2, file_size)
        fin.seek(-line_len, os.SEEK_END)
        lines = f.readlines()
        if len(lines) > 1 or line_len == file_size:
            return lines[-1]

then read csv:

import csv

print ', '.join(csv.reader([last_line]).next())