save project

my_search.py

-import random
-
-alist = []
-for i in range(1, 101):
-    alist.append(i)
-num = random.choice(alist)
-# 请完善二分查找函数binary_search(),查找出num在列表alist里面的索引位置
-
-def binary_search(alist,num):
-    low=0
+import turtle
+screen=turtle.Screen()
+screen.bgcolor("light blue")
+pen=turtle.Pen()
+pen.penup()
+pen.goto(-100,0)
+pen.write("祝你生日快乐",font=('Time',30,'normal'))
+pen.hideturtle()
+turtle.done()
\ No newline at end of file
-    high=len(alist)-1
-    while low<=high:
-        mid=(low+high)
-        guess=alist[mid]
-        if guess == num:
-            return mid
-        elif guess < num:
-            low=mid+1
-        else:
-            high=mid-1
-    return None
-result =binary_search(num_list，num)
-print(result)    
\ No newline at end of file