save project

diy.py

 with open(r'c:\Users\Thinkpad\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8') as a:
     b=a.readlines()
+dog=[]
 for i in b:
     s=0
     c=i.split()
     for j in c[1:]:
         s+=int(j)
-    print(c[0]+str(s))
+    txt=c[0]+str(s)+'\n'
+    dog.append(txt)
+with open(r'c:\Users\Thinkpad\Documents\lesson13-1\sales_list.txt','a',encoding='utf-8') as a:
+    a.writelines(dog)
\ No newline at end of file