list reversal error

[vlyamtsev at gmail.com]

i have list of strings "data" and i am trying to build reverse list data1
data1 = []
for i in range(len(data)):
   j = len(data) - i
   data1.append(data[j])

but i have the following error:
data1.append(data[j])
IndexError: list index out of range
 
am i doing it wrong?
Thanks