For example:
a = {};
b = [];
for i in range(20):
b.append(i)
a[i] = b
After loops, all keys of a is linked to the same final list b [0,1,2,...,19]
.
However, what I want is that a[0] = [0]
, a[1] = [0,1]
, a[2] = [0,1,2]
.
I have no idea what is wrong here.