save project

my_search.py

@@ -7,4 +7,20 @@ 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):
-    
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+    low = 0
+    high = len(alist)-1
+    while low <= hieh:
+        mid = (low+hieh) // 2
+        guess = alist[nid]
+        if guess == num:
+            return mid
+         
+         
+    elif guess< num:
+        low = mid+1
+    elif:  
+        hash = mid-1  
+return None
+result = binary_search(alist,num)  
+print(":"num)       
+print(":"result)
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