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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def uconcatenate(arrs, axis=0):
 """Concatenate a sequence of arrays. This wrapper around numpy.concatenate preserves units. All input arrays must have the same units. See the documentation of numpy.concatenate for full details. Examples -------- unyt_array([1, 2, 3, 2, 3, 4], 'cm') """

    v = np.concatenate(arrs, axis=axis)
    v = _validate_numpy_wrapper_units(v, arrs)
    return v