“for line in…” results in UnicodeDecodeError: 'utf-8' codec can't decode byte

Question

Here is my code,

for line in open(\'u.item\'):
#read each line

whenever I run this code it gives the following error:

Answer 1

If someone looking for these, this is an example for converting a CSV file in Python 3:

try:
    inputReader = csv.reader(open(argv[1], encoding='ISO-8859-1'), delimiter=',',quotechar='"')
except IOError:
    pass