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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 close(self, figs=True, data=False, ds=False, remove_only=False):
 """ Close this project instance Parameters figs: bool Close the figures data: bool delete the arrays from the (main) project ds: bool If True, close the dataset as well remove_only: bool If True and `figs` is True, the figures are not closed but the plotters are removed"""

        import matplotlib.pyplot as plt
        close_ds = ds
        for arr in self[:]:
            if figs and arr.psy.plotter is not None:
                if remove_only:
                    for fmto in arr.psy.plotter._fmtos:
                        try:
                            fmto.remove()
                        except Exception:
                            pass
                else:
                    plt.close(arr.psy.plotter.ax.get_figure().number)
                arr.psy.plotter = None
            if data:
                self.remove(arr)
                if not self.is_main:
                    try:
                        self.main.remove(arr)
                    except ValueError:  # arr not in list
                        pass
            if close_ds:
                if isinstance(arr, InteractiveList):
                    for ds in [val['ds'] for val in six.itervalues(
                               arr._get_ds_descriptions(
                                    arr.array_info(ds_description=['ds'],
                                                   standardize_dims=False)))]:
                        ds.close()
                else:
                    arr.psy.base.close()
        if self.is_main and self is gcp(True) and data:
            scp(None)
        elif self.is_main and self.is_cmp:
            self.oncpchange.emit(self)
        elif self.main.is_cmp:
            self.oncpchange.emit(self.main)