save project

my_tree.py

-import turtle
+bingo_num = 17
+num_list = [1,3,5,8,11,15,17,18,20,21]
+
+low = 0
+high = len(num_list)-1
+while low <= high:
+    mid = (low + high) //2
+    guess = num_list[mid]
+    if guess == bingo_num:
+        print("找到了，他的索引是:",mid)
+        break
+    elif guess < bingo_num:
+        low = mid + 1
+    else:
+        high = mid - 1    
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-pen = turtle.Turtle()
-pen.color('sienna')
 
-w = turtle.Screen()
-w.bgcolor('wheat')      # wheat小麦
 
-# 移动到起点
-pen.left(90)
-pen.up()
-pen.backward(150)    # 后退
-pen.down()
 
-turtle.done()
\ No newline at end of file