Update and rename task8.py to turtle_race.py

Author: aleena-zahra

task8.py renamed to turtle_race.py

@@ -2,11 +2,14 @@
 import random
 screen = Screen() 
 screen.setup(width=600,height=600)
-screen.title('aleena')
+screen.title('Turtle Race')
 turtles = []
 speed = 10
 y = -100
 in_screen = True
+
+#make turtles by appending an instance of a turtle to turtles list in an iteration 
+#all properties of that instance are declared inside the loop
 def make_turtle():
     global y
     for i in range(0,5):
@@ -19,7 +22,7 @@ def make_turtle():
         t.goto(-280, y)
         y+=50
         turtles.append(t)
-
+#move the turtle forward by a random number
 def move_turtles():
     for turtle in turtles: 
         random_number1 = random.randint(0,50)
@@ -28,11 +31,12 @@ def move_turtles():
 make_turtle()   
 while in_screen==True:     
     move_turtles()
+    #iterate through turtles list and check if any has gone beyond the screen
+    #if so the race ends
     for turtle in turtles:
         xposition = turtle.xcor()
         if xposition >=270:
             in_screen = False
+            
 
-
-
-screen.exitonclick()
+screen.exitonclick()