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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 translate(obj, vec, **kwargs):
 """ Translates curves, surface or volumes by the input vector. Keyword Arguments: * ``inplace``: if False, operation applied to a copy of the object. *Default: False* :param obj: input geometry :type obj: abstract.SplineGeometry or multi.AbstractContainer :param vec: translation vector :type vec: list, tuple :return: translated geometry object """

    # Input validity checks
    if not vec or not isinstance(vec, (tuple, list)):
        raise GeomdlException("The input must be a list or a tuple")

    # Input validity checks
    if len(vec) != obj.dimension:
        raise GeomdlException("The input vector must have " + str(obj.dimension) + " components")

    # Keyword arguments
    inplace = kwargs.get('inplace', False)

    if not inplace:
        geom = copy.deepcopy(obj)
    else:
        geom = obj

    # Translate control points
    for g in geom:
        new_ctrlpts = []
        for pt in g.ctrlpts:
            temp = [v + vec[i] for i, v in enumerate(pt)]
            new_ctrlpts.append(temp)
        g.ctrlpts = new_ctrlpts

    return geom