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Adding columns

You finished the last set of exercises by creating an array called trunk_stump_diameters, which combined data from the trunk diameter and stump diameter columns into a 1D array. Now, you'll add that 1D array as a column to the tree_census array.

numpy is loaded as np, and both the tree_census and trunk_stump_diameters arrays are available.

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Print the shapes of both tree_census and trunk_stump_diameters.

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