save project

my_search.py

@@ -11,6 +11,12 @@ def binary_search(alist,num):
     high=len(alist)
     while low<=high:
         mid=(low+high)//2
-        guess=num_list[mid]
+        guess=alist[mid]
         if guess==num:
-            
\ No newline at end of file
+            return mid
+        elif guess<num:
+            low=mid+1
+        else:
+            high=mid-1
+    return None
+print(binary_search(alist,num)) 
\ No newline at end of file