Class method returning multiple values,dont know which is returned when..

[ujjwalrathod007]

Dear all, Good morning from Germany,
I have a python code in which the function returns two values. Out of which, only one value changes at a time and other remains the same. I want to find which is changing and want to append it. The code looks as following

def calcrand(self,xlowrand,xhighrand):
        xalg = self.xalg
        yalg = self.yalg
        xlowrand = self.xlowrand
        xhighrand = self.xhighrand
                        
        if (len(xalg))>=2 and len(yalg)>=2:
            last = len(yalg)-1
            xPrevious = xalg[last-1]
            xLast = xalg[last]    
            yPrevious = yalg[last-1]
            yLast = yalg[last]
            prevdist= abs(yalg[last-1]-ygoal)
            currentdist= abs(yalg[last]-ygoal)
                                                          
            if currentdist<prevdist:
                m=float ((yLast-yPrevious)/(xLast-xPrevious)) 
                
                if m>0:
                    if yalg[last]< ygoal:
                        xlowrand=xalg[last]
                        return float(xlowrand),float(xhighrand),
                    else:
                        xhighrand=xalg[last]
                        return float(xlowrand),float(xhighrand)
                elif yalg[last]< ygoal:
                    xhighrand=xalg[last]
                    return float(xlowrand),float(xhighrand)
                else:
                    xlowrand=xalg[last]
                    return float(xlowrand),float(xhighrand)              
                                         
        elif (len(xalg))==1:
            return float(xlowrand),float(xhighrand)
    
        elif (len(xalg))<1:
            return float(xlowrand),float(xhighrand)

        else:
            print('there are no data')
            
        return float(xlowrand),float(xhighrand)

I run this in a loop...