Add labs files for Chapters 7 and 8

thinkcspy/Chapter-7-Exercises/Python-files/Lab.py

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+# Runestone.Academy thinkcspy course
+# Chapter 7
+# Lab
+
+import turtle
+#import math
+import random
+
+
+fred = turtle.Turtle()
+clara = turtle.Turtle()
+
+wn = turtle.Screen()
+wn.setworldcoordinates(-1,-1,1,1)
+wn.bgcolor("tan")
+wn.tracer(100)
+
+clara.dot()
+print(clara.pos())
+clara.up()
+clara.goto(0,1)
+clara.down()
+clara.circle(-1)
+print(clara.pos())
+print(clara.distance(0.0,0.0))
+
+fred.up()
+
+numdarts = 100000
+insideCount = 0
+
+for i in range(numdarts):
+    randx = random.random()*2-1
+    randy = random.random()*2-1
+    
+    fred.goto(randx,randy)
+    dist = fred.distance(0.0, 0.0)
+        
+    if dist < 1:
+        color = "red"
+        insideCount += 1
+        place = "in"
+    else:
+        color = "blue"
+        place = "out"
+   
+    fred.down()
+    fred.dot(10,color)
+    fred.up()
+
+
+mypi = 4 * (insideCount / numdarts)
+print(insideCount,"out of", numdarts, "darts made it into the circle.")    
+print("The value of Pi based on the numbers number of darts that made it into the circle is", mypi, ".")
+
+wn.exitonclick()