save project

diy.py

 with open(r"C:\Users\Administrator\Documents\lesson13-1\sales_list.txt","r",encoding="utf-8") as a :
 with open(r"C:\Users\Administrator\Documents\lesson13-1\sales_list.txt","r",encoding="utf-8") as a :
+m=[]
     e=a.readlines()
     e=a.readlines()
 for i in e:
 for i in e:
     data=i.split()
     data=i.split()
@@ -6,5 +7,6 @@ for i in e:
     for w in data[1:]:
     for w in data[1:]:
         sum=sum+int(w)
         sum=sum+int(w)
     x=data[0]+str(sum)
     x=data[0]+str(sum)
-    print(x)
-
+    m.append(x)
+with open(r"C:\Users\Administrator\Documents\lesson13-1\sales_list.txt","a",encoding="utf-8") as a :
+    a.writelines(m)