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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 getRtplotWins(self):
 """" Returns a string suitable to sending off to rtplot when it asks for window parameters. Returns null string '' if the windows are not OK. This operates on the basis of trying to send something back, even if it might not be OK as a window setup. Note that we have to take care here not to update any GUI components because this is called outside of the main thread. """

        try:
            if self.isFF():
                return 'fullframe\r\n'
            elif self.isDrift():
                xbin = self.wframe.xbin.value()
                ybin = self.wframe.ybin.value()
                nwin = 2*self.wframe.npair.value()
                ret = str(xbin) + ' ' + str(ybin) + ' ' + str(nwin) + '\r\n'
                for xsl, xsr, ys, nx, ny in self.wframe:
                    ret += '{:d} {:d} {:d} {:d}\r\n'.format(
                        xsl, ys, nx, ny
                    )
                    ret += '{:d} {:d} {:d} {:d}'.format(
                        xsr, ys, nx, ny
                    )
                return ret
            else:
                xbin = self.wframe.xbin.value()
                ybin = self.wframe.ybin.value()
                nwin = 4*self.wframe.nquad.value()
                ret = str(xbin) + ' ' + str(ybin) + ' ' + str(nwin) + '\r\n'
                for xsll, xsul, xslr, xsur, ys, nx, ny in self.wframe:
                    ret += '{:d} {:d} {:d} {:d}\r\n'.format(
                        xsll, ys, nx, ny
                    )
                    ret += '{:d} {:d} {:d} {:d}\r\n'.format(
                        xsul, 1025 - ys - ny, nx, ny
                    )
                    ret += '{:d} {:d} {:d} {:d}\r\n'.format(
                        xslr, ys, nx, ny
                    )
                    ret += '{:d} {:d} {:d} {:d}\r\n'.format(
                        xsur, 1025 - ys - ny, nx, ny
                    )
                return ret
        except:
            return ''