python examples/wordmath/seisseisdoze.pySEIS+SEIS=DOZE%(s)d%(e)d%(i)d%(s)s+%(s)d%(e)d%(i)d%(s)d=%(d)d%(o)d%(z)d%(e)dTraceback (most recent call last):  File "examples/wordmath/seisseisdoze.py", line 38, in <module>    main()  File "examples/wordmath/seisseisdoze.py", line 35, in main    "%(d)d%(o)d%(z)d%(e)d") % sTypeError: unsupported operand type(s) for %: 'NoneType' and 'dict'

$ python examples/wordmath/seisseisdoze.pySEIS+SEIS=DOZE4854+4854=97084864+4864=97284814+4814=96283643+3643=7286