Help With While Loop and Append

[perfringo]

is there any way where I can transfer only values of nums to other. like only values of one list of numbers to the values of second list of numbers without linkining them. cause I'll be using the main list repeatedly?

In [1]: nums = [1, 2, 3]

In [2]: other = nums[:]        # slice

In [3]: id(nums)
Out[3]: 4384668552

In [4]: id(other)
Out[4]: 4383868296

In [5]: nums.append(4)

In [6]: nums
Out[6]: [1, 2, 3, 4]

In [7]: other
Out[7]: [1, 2, 3]

You should keep in mind that it is only one level deep. Meaning that if list elements are mutable then slice is mutating as well:

In [8]: nums = [[1], [2], [3]]

In [9]: other = nums[:]

In [10]: nums[-1].append(4)

In [11]: nums
Out[11]: [[1], [2], [3, 4]]

In [12]: other
Out[12]: [[1], [2], [3, 4]]

There is of course built-in module copy for deep copies.

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For complete picture one additional example of expected behaviour:

In [13]: del nums[-1]       

In [14]: nums
Out[14]: [[1], [2]]

In [15]: other
Out[15]: [[1], [2], [3, 4]]