save project

my_search.py

@@ -14,5 +14,15 @@ def binary_search(alist,num):
         mid = (low + high) //2
         cai = alist[mid]
         if cai == num:
-            raise mid
-        elif cai <num
\ No newline at end of file
+            return mid
+        elif cai < num:
+            low = mid +1
+        else:
+            high = mid - 1
+    return -1
+
+result = binary_search(altst,num)
+if result < 0:
+    print(str(num)+"没找到")
+else:
+    print(str(num)+找到,"wei"+str(result))
\ No newline at end of file