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Solve the following python programming problem given the following code:
def plot_ARD(kernel, filtering = None, legend = False, canvas = None, **kwargs) : 
    '
    If an ARD kernel is present, plot a bar representation using matplotlib

    :param fignum: figure number of the plot
    :param filtering: list of names, which to use for plotting ARD parameters.
                      Only kernels which match names in the list of names in filtering
                      will be used for plotting.
    :type filtering: list of names to use for ARD plot
    ' 
    Tango.reset () 
    ard_params = np.atleast_2d (kernel.input_sensitivity (summarize = False)) 
    bottom = 0 
    last_bottom = bottom 
    x = np.arange (kernel._effective_input_dim) 
    parts = [] 
    def visit(x) : 
        if ((not isinstance (x, CombinationKernel)) and isinstance (x, Kern)) : 
            parts.append (x) 
kernel.traverse (visit) 
    if (filtering is None) : 
        filtering = [k.name for k in parts] 
bars = [] 
    kwargs = update_not_existing_kwargs (kwargs, pl ().defaults.ard) 
    if (canvas is None) : 
        (canvas, kwargs) = pl ().new_canvas (xlim = ((- 0.5), (kernel._effective_input_dim - 0.5)), xlabel = 'input dimension', ylabel = 'sensitivity', ** kwargs) 
for i in range (k.shape [0]) : 
        if (parts [i].name in filtering) : 
            c = Tango.nextMedium () 
            bars.append (pl ().barplot (canvas, x, ard_params [i, :], color = c, label = parts [i].name, bottom = bottom, ** kwargs)) 
            last_bottom = ard_params [i, :] 
            bottom += last_bottom 
else : 
            print ('filtering out {}'.format (parts [i].name)) 
return pl ().add_to_canvas (canvas, bars, legend = legend) 

    
    

    Fix the buggy line: for i in range (k.shape [0]) :
assistant
#Here is Python program to fix the buggy line: for i in range (k.

for i in range (ard_params.shape [0]) :