save project

diy.py

-with open(r"C:\Users\51339\Desktop\新建 文本文档.txt",'r',encoding='utf-8') as file:
+with open(r'C:\Users\51339\Desktop\新建 文本文档.txt','r',encoding='utf-8') as file:
     a=file.readlines()
     a=file.readlines()
-sum1=[]
+final_sum=[]
 for i in a:
 for i in a:
     date=i.split()
     date=i.split()
     sum=0
     sum=0
     for sales in date[1:]:
     for sales in date[1:]:
         sum=sum+int(sales)
         sum=sum+int(sales)
-    s=date[0]+str(sum)
-    num1.append(s)
-with open(r"C:\Users\51339\Desktop\新建 文本文档 (2).txt",'r',encoding='utf-8') as file:
-    a=file.writelines(num1)
+    s=date[0]+str(sum)+'\n'
+    final_sum.append(s)
+with open(r'C:\Users\51339\Desktop\新建 文本文档 (2).txt','a',encoding='utf-8') as file:
+    a=file.writelines(final_sum)
\ No newline at end of file