The next code has an unexpected result: >>>a=3*[3*[0]] >>>a [[0, 0, 0], [0, 0, 0], [0, 0, 0]] >>>a[0][0]=1 >>>a [[1, 0, 0], [1, 0, 0], [1, 0, 0]]
The code assigned to "1" a(0,0), a(1,0) and a(2,0). It was expected: [[1, 0, 0], [0, 0, 0], [0, 0, 0]] When the followind code is ran, them the correct result is obtained: >>>a=[[0 for i in range(3)] for j in range(3)] >>>>>>a [[0, 0, 0], [0, 0, 0], [0, 0, 0]] >>>a[0][0]=1 >>>a [[1, 0, 0], [0, 0, 0], [0, 0, 0]] So, what is wrong ? Best Regars, Narci __________________ Narci Edson Venturini (19) 99733-8420 _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
