auto save

diy.py

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

newsales_list.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