import sys
filename = sys.argv[0]
f = open(filename, 'r')
for line in f:
    print(''.join(reversed(line)))
f.close()

06afa0fafcb929c6efad373a70797a55c291ced3
<mask token>

<mask token>
for line in f:
    print(''.join(reversed(line)))
f.close()

<mask token>
filename = sys.argv[0]
f = open(filename, 'r')
for line in f:
    print(''.join(reversed(line)))
f.close()

import sys
filename = sys.argv[0]
f = open(filename, 'r')
for line in f:
    print(''.join(reversed(line)))
f.close()
