save project

diy1.py

@@ -4,7 +4,7 @@
 def sum(n):
 def sum(n):
     if n==1:
     if n==1:
         return 1
         return 1
-    num=sum(n-1)n
+    num=sum(n-1)+n
     return num
     return num
 print(sum(10))
 print(sum(10))