limit for loop with list?

i tryed this code and created an object property


own.list = [[0 for x in range(0,3)] for y in range(0,10)]

print the result is always

[0,0,0][0,0,0]]

but if i assigned a simple variables than is ok:


list = [[0 for x in range(0,3)] for y in range(0,10)

[[0, 0, 0], [0, 0, 0], [0, 0, 0], [0, 0, 0], [0, 0, 0], [0, 0, 0], [0, 0, 0], [0, 0, 0], [0, 0, 0], [0, 0, 0]]

this is a bug?

Anyway how can i create in BGE a static variable list , because if the sensor is triggered again, the list content is forgetting.