Exercise $6\mathrm{.}2\mathrm{.}2$ Three Slices

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Design and implement a function called three$\_$slices$()$ that take a list object as its parameter and slice it into three equal parts. Your function must work correctly with the following scenario:

$-$ An enpty list.

$-$ A list with two elements only.

$-$ A list with more than two elements.

$-$ A slice cannot have more than one extra element than the other slices.

The function return the three slices.

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# Complete the following function.

def three$\_$slices$($my$\_$list$)$:

return