save project

a.py

+Left=[]
 with open(r'c:\Users\Administrator\Desktop\sales_list.txt','r',encoding = 'utf-8') as file1:
     a=file1.readlines()
     for i in a:
@@ -5,5 +6,8 @@ with open(r'c:\Users\Administrator\Desktop\sales_list.txt','r',encoding = 'utf-8
         s=0
         for x in data[1:]:
             s+=int(x)
-        print(data[0]+str(s))
+        Left.append(data[0]+str(s)+'\n')
+with open(r'c:\Users\Administrator\Desktop\sale_list.txt','w',encoding = 'utf-8') as f:
+    f.writelines(Left)
 
+