IndexError: list assignment index out of range in python

Question

IndexError: list assignment index out of range in python What am i doing wrong. I am an newbie

actual_ans_dict = []
for data in prsnobj.result:
    actual_ans_dict[data[0]] = data[1]
    print actual_ans_dict

Answer 1

actual_ans_dict is an empty list. You are trying to set a value to actual_ans_dict[data[0]] but an element with this index doesn't exist.
You can change the type of actual_ans_dict to dict :

actual_ans_dict = {}
for data in prsnobj.result:
    actual_ans_dict[data[0]] = data[1]
    print actual_ans_dict

Answer 2

This is because your actual_ans_dict is empty, which means, it has not any indexes yet.

actual_ans_dict = [None]*max([data[0] for data in prsnobj.result])  # not very pythonic, actualy
for data in prsnobj.result:
    actual_ans_dict[data[0]] = data[1]
    print actual_ans_dict

This will give you the ability to assign a value to a particular index. There is a slightly more correct and shorter way to do it:

actual_ans_dict = [data[1] for data in prsnobj.result]