save project

diy.py

-with open("r'c:\Users\合肥路 004\Desktop\sales_list.txt","r",encoding="utf-8") as file:
-    a=file.read()
-    print(type(a[3,5]))
+with open(r"c:\Users\合肥路 004\Desktop\sales_list.txt","r",encoding="utf-8") as file:
+    a=file.readlines()
+file_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"
+    file_sum.append(result)
+with open(r"c:\Users\合肥路 004\Desktop\saleslist.txt","a",encoding="utf-8") as file:
+    file.writelines(file_sum)
+
+
     
     
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