for pic,fn,xoff in [(self.PNew,self.New,0),(self.POpen,self.Open,0),(self.PSave,self.Save,0),(self.POrigin,self.SetOrigin,20),(self.PFiducial,self.SetFiducial,0),(self.PLine,self.AddLine,20),(self.PPoint,self.AddPoint,0),(self.PMove,self.AddMove,0),(self.PCircle,self.AddCircle,0),(self.PCall,self.AddCall,0)]: Button(ButtonRow,image=pic,command=fn).pack(side=LEFT,padx=(xoff,0))