save project

a.py

+a=["z\n",'z\n','m\n']
+with open(r'\Users\Administrator\Desktop\hello.txt','a',encoding='utf_8')as file:
+    file.writelines(a)

diy.py

+with open(r'\Users\Administrator\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8') as file:
+    a=file.readlines()
+
+#    print(type(a[3:5]))
+final_sum=[]
+for i in a:
+    data=i.split()
+#    print(data)
+    sum=0
+    
+    for sales in data[1:]:
+        sum=sum+int(sales)
+    result=data[0]+str(sum)+'\n'
+    final_sum.append(result)
+    #print(result)
+with open(r'\Users\Administrator\Desktop\hello.txt','w',encoding='utf-8') as file:
+    file.writelines(final_sum)
\ No newline at end of file