Whether this is fast enough, or not, I don't know:

filename = "data_file.txt"
f = open(filename, 'r')
forward =  [line.rstrip('\n') for line in f.readlines()]
backward =  [line.rstrip('\n') for line in reversed(forward)]
f.close()
print forward, "\n\n", "********************\n\n", backward, "\n"


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David Hutto
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