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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 get_mpl_heatmap_axes(dfr, fig, heatmap_gs):
 """Return axis for Matplotlib heatmap."""

    # Create heatmap axis
    heatmap_axes = fig.add_subplot(heatmap_gs[1, 1])
    heatmap_axes.set_xticks(np.linspace(0, dfr.shape[0] - 1, dfr.shape[0]))
    heatmap_axes.set_yticks(np.linspace(0, dfr.shape[0] - 1, dfr.shape[0]))
    heatmap_axes.grid(False)
    heatmap_axes.xaxis.tick_bottom()
    heatmap_axes.yaxis.tick_right()
    return heatmap_axes