Code for the worksheet attached below.

There must surely be a simple answer to this problem, but I have not
been able to figure it out. I loop through i,j print the list
[i,j], and append the list to pts. However, once appended to points
something goes wrong, and all that points sees are the constant lists
[3,3]. I have changed the various constants and such, but I am at a
loss to explain why this is happening.

What I need is for pts to contain the correct information. Any help
would really be appreciated.

Ben

{{{id=125|
P=[0,0]
i=0
pts=[]
while i<4:
    P[0]=i

    j=0
    while j<4:
        P[1]=j
        print P
        pts.append(P)
        j+=1
    i+=1
pts
///
[0, 0]
[0, 1]
[0, 2]
[0, 3]
[1, 0]
[1, 1]
[1, 2]
[1, 3]
[2, 0]
[2, 1]
[2, 2]
[2, 3]
[3, 0]
[3, 1]
[3, 2]
[3, 3]
[[3, 3], [3, 3], [3, 3], [3, 3], [3, 3], [3, 3], [3, 3], [3, 3], [3,
3], [3, 3], [3, 3], [3, 3], [3, 3], [3, 3], [3, 3], [3, 3]]
}}}

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