Explaination:
    import numpy as np

    np.zeros(the amount of arrays, amount of rows, the amount of colums)
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Usage:
    array_city = np.zeros((2, 3, 4))
    print(array_city)
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Results:
[
    [
      [0. 0. 0. 0.],
        [0. 0. 0. 0.],
      [0. 0. 0. 0.],
    ],
      
    [
      [0. 0. 0. 0.],
      [0. 0. 0. 0.],
      [0. 0. 0. 0.],
    ]
]