binary i/o

#!/usr/bin/python3
import sys
with open(sys.argv[1], 'rb') as f:
    with open(sys.argv[2], 'wb') as w1:
        with open(sys.argv[3], 'wb') as w2:
            data = f.read(22)
            while data:
                w1.write(data + b'\n')
                w2.write(data)
                data = f.read(22)