Python: Invalid Token

python octal
The.Anti.9 picture The.Anti.9 · Dec 3, 2008 · Viewed 18.1k times · Source

Some of you may recognize this as Project Euler's problem number 11. The one with the grid.

I'm trying to replicate the grid in a large multidimensional array, But it's giving me a syntax error and i'm not sure why

grid = [ 
[ 08, 02, 22, 97, 38, 15, 00, 40, 00, 75, 04, 05, 07, 78, 52, 12, 50, 77, 91, 08 ],
[ 49, 49, 99, 40, 17, 81, 18, 57, 60, 87, 17, 40, 98, 43, 69, 48, 04, 56, 62, 00 ],
[ 81, 49, 31, 73, 55, 79, 14, 29, 93, 71, 40, 67, 53, 88, 30, 03, 49, 13, 36, 65 ],
...

And I get this error:

  File "D:\development\Python\ProjectEuler\p11.py", line 3
    [ 08, 02, 22, 97, 38, 15, 00, 40, 00, 75, 04, 05, 07, 78, 52, 12, 50, 77, 91 , 08 ],
       ^ SyntaxError: invalid token

Why is it throwing an error before the comma?

Answer

Paige Ruten picture Paige Ruten · Dec 3, 2008

I think when you start a literal number with a 0, it interprets it as an octal number and you can't have an '8' in an octal number.

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