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import sys

def read_file(file_name):
    with open(file_name, 'r') as f:
        lines = f.readlines()
        return lines

if __name__=="__main__":
    crap = read_file(sys.argv[1])
    print crap

mbohun@firewolf:~/src> python test.py test.py
['import sys\n', '\n', 'def read_file(file_name):\n', "    with open(file_name, 'r') as f:\n", '        lines = f.readlines()\n', '        return lines\n', '    \n', 'if __name__=="__main__":\n', '    crap = read_file(sys.argv[1])\n', '    print crap\n']