auto save

diy2.py

-# 在diy1的基础上选一种打开方式，建议选with open() as
-with open(r'C:\Users\Administrator\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8') as file:
-    a=file.readlines()
-    #print(a)
-
-for i in a:
-    data=i.split()
-    #print(data[1:])
-    sum=0
-    for sales in data[1:]:
-        sum=sum+int(sales)
-    result=data[0]+str(sum)
-    print(result)

diy5.py

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

new_salelist.txt

+悟空348
+诺依380
+小贝182
+李丽201
+宋扬107
+王明245
+李强164
+孙小白222
+苏琪137
+刘若若147
+刘阳226
+王胜男123
+王娇131

sales_list.txt

@@ -10,4 +10,4 @@
 刘若若 11 11 13 11 20 15 13 29 24 
 刘若若 11 11 13 11 20 15 13 29 24 
 刘阳 11 15 22 11 23 26 22 15 17 52 12
 刘阳 11 15 22 11 23 26 22 15 17 52 12
 王胜男 27 15 15 26 13 12 15
 王胜男 27 15 15 26 13 12 15
-王娇 12 11 12 12 15 35 23 11
+王娇 12 11 12 12 15 35 23 11
\ No newline at end of file