Appending to list of list in For loop

[nico_mnbl]

Hello,

I have question regarding for loops and appending to a list in that loop. In a for loop, I am trying to append a list to a list of lists. With each iteration, I modify one of the elements of the list. The code is listed below:

test = []
current = [0, 0]

for i in range(6):
    print('current value: {}'.format(current))
    test.append(current)
    current[0] += 1 #only increment the value at index 0

print('Test: {}'.format(test))

I print the current value with every iteration for testing purposes. The desired output is Test: [[0, 0], [1, 0], [2, 0], [3, 0], [4, 0], [5, 0]]. However, running the code yields the following:

Output:
current value: [0, 0]
current value: [1, 0]
current value: [2, 0]
current value: [3, 0]
current value: [4, 0]
current value: [5, 0]
Test: [[6, 0], [6, 0], [6, 0], [6, 0], [6, 0], [6, 0]]

It seems like the current value is correctly incremented, however the final output (test) is a list of lists containing only the last value taken by current.

Can anyone explain this behaviour, or how I could get the desired output?

Thanks,
Nicolas