When I run this I get if des =[1]<0 Error: name des is not defined. What could the issue be? Also, the very last line "r

[answerhappygod]

When I run this I get if des =[1]<0 Error: name des isnot defined. What could the issue be? Also, the very last line"return (self.orig_x,self.orig_y)" will not fit into the code atall, it give me red.
class Sensorless_Wheeled_Robot:
def __init__(self, orig_x=0, orig_y=0): self.orig_x,self.orig_y=orig_x,orig_y
def move_robot_by_unit_distance(self,x=0,y=0): if -1<=x<=1 and y==0: # ONLY PASS X AND Y AS-1,0,1. SO THAT ROBOT MOVES BY UNIT DISTANCE ONLY. self.orig_x+=x if x==0 and -1<=y<=1: self.orig_y+=y print("position of robot is:",self.orig_x,self.orig_y) return (self.orig_x,self.orig_y)
def move_to_destination(self,des,obs): # des is the list containingpositions of destination . print("moving towards x") # obs is the listcontaining positions of obstackle
if des[0]<0: while(des[0]<self.orig_x ): if(self.orig_x-1)==obs[0] and (self.orig_y)==obs[1]: print("obstacle is detectedat :",obs[0],obs[1])
# if obstacle position is found right ahead of robot then robotwill go sideways avoiding the obstacle. self.move_robot_by_unit_distance(0,1) self.move_robot_by_unit_distance(-1,0) self.move_robot_by_unit_distance(-1,0) self.move_robot_by_unit_distance(0,-1) else:self.move_robot_by_unit_distance(-1,0)
if des[0]>0: while(des[0]>self.orig_x): if(self.orig_x+1)==obs[0] and (self.orig_y)==obs[1]: print("obstacle is detectedat :",obs[0],obs[1])
self.move_robot_by_unit_distance(0,1) self.move_robot_by_unit_distance(1,0) self.self.move_robot_by_unit_distance(1,0) self.move_robot_by_unit_distance(0,-1) else: self.move_robot_by_unit_distance(1,0)
if des[1]<0: while(des[1]<self.orig_y):
if (self.orig_x)==obs[0] and(self.orig_y-1)==obs[1]: print("obstacle isdetected at :",obs[0],obs[1]) self.move_robot_by_unit_distance(1,0) self.move_robot_by_unit_distance(0,-1) self.move_robot_by_unit_distance(0,-1) self.move_robot_by_unit_distance(-1,0)
else:self.move_robot_by_unit_distance(0,-1)
if des[1]>0: while(des[1]>self.orig_y):
if((self.orig_x)==obs[0] and (self.orig_y+1)==obs[1]): print("obstacle is detected at ",obs[0],obs[1])
self.move_robot_by_unit_distance(1,0) self.move_robot_by_unit_distance(0,1) self.move_robot_by_unit_distance(0,1) self.move_robot_by_unit_distance(-1,0)
else:self.move_robot_by_unit_distance(0,1)print("final position of robot is: ",self.orig_x,self.orig_y) return (self.orig_x,self.orig_y)