how to create pythonic codes including for loop and if statement?

[Gribouillis]

The only unpythonic parts that I see here are if i==0 & j==0 which should be if not(i or j) and i==0|j==0 which should be not(i and j). Note that & and | are bitwise operators and not logical operators. The result is also different because they have different levels of operator precedence. For example

>>> 0==0 & 7==0
True
>>> 0==0 and 7==0
False

Writing code on a single line does not necessarily give better Python code, and it is not necessarily 'pythonic'. I'm not sure there is a better solution here.