[Tutor] append index out of range

[lina]

Hi,

there is a file

$ cat atom-pair_9.out | wc -l
75426

there is 75426 lines there,

    results=[]
    unique={}
    for line in open(tobetranslatedfile,"r"):
        tobetranslatedparts=line.strip().split()
        results.append(dictionary[tobetranslatedparts[2]])

it complains

    results.append(dictionary[tobetranslatedparts[2]])
IndexError: list index out of range


is it really too large this file?

Thanks,