save project

my_search.py

@@ -10,7 +10,7 @@ def binary_search(alist,num):
     low = 0
     high = len(alist)-1
     while low <= high:
-        mid = (low+high) // 2
+        mid = (low + high) // 2
         guess = alist[mid]
         if guess == num:
             return mid
@@ -19,3 +19,7 @@ def binary_search(alist,num):
         else:
             high = mid - 1
     return None
+
+result = binary_search(alist,num)
+print("老师给的数是：", num)
+print("它在列表里的")