save project

my_search.py

@@ -7,6 +7,15 @@ num = random.choice(alist)
 
 def binary_search(alist,num):
     low = 0
-    right = low(alist)
-    mid = (low + right) // 2
-    if 
+    right = len(alist)-1
+    while low <=right:
+        mid = (low+right) // 2
+        guess_num = alist[mid]
+        if guess_num == num:
+            print("找到了:",mid)
+            break
+        elif guess_num < num:
+            low = mid + 1
+        elif guess_num > num:
+            right = mid - 1
+binary_search(alist,num)
\ No newline at end of file