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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 show_colormap(cls, names=[], N=10, show=True, *args, **kwargs):
 """Show a colormap dialog Parameters %(show_colormaps.parameters.no_use_qt)s"""

        names = safe_list(names)
        obj = cls(names, N, *args, **kwargs)
        vbox = obj.layout()
        buttons = QDialogButtonBox(QDialogButtonBox.Close, parent=obj)
        buttons.rejected.connect(obj.close)
        vbox.addWidget(buttons)
        if show:
            obj.show()
        return obj