列表索引超出'file'对象的范围 - Python

Question

I have a text file reval2_log.txt , which contains data like

yield_curve on;DATE_val 2013 12 31;arion on;INFL_filn /srv/www/tbg/file/1/2014-07-21/Vaxtaferlar_nidur.csv;ASSETS_filn /srv/www/tbg/file/1/2014-07-21/Vordur_VT.xls;REVAL_filn kfjh.xls;CPI_value 416.7;LSK_value 8022.3;YIELDC_filn /srv/www/tbg/file/1/2014-07-21/infl.csv;CASHF_filn weouhf.xls;sjf on;user 1

I then do this:

f = open('reval2_log.txt', 'r')
read = f.readlines()[0].split(";")

And it returns an IndexError . Python of course can find the file, because it doesn't return a "file not found" error (and it does if I garble the filename).

Trace:

File "/srv/www/tbg/notendur/views.py" in reikna_reval2
  79.       reval2.main(user)
File "/srv/www/tbg/calc/reval2.py" in main
  322.  read = f.readlines()[0].split(";")

Exception Type: IndexError at /notendur/reikna/
Exception Value: list index out of range

Answer 1

Martijn's suggestion to use readline() is good. If your input can be empty at times, then you can try this:

read = f.read().split(";")