auto save

diy.py

+list1 = []
+with open(r"D:\python课件\文件读写\sales_list.txt","r",encoding="utf-8") as file:
+    a = file.readlines()
+    for i in a: # 遍历每一行的数据
+        data = i.split()  # 每一行分割成单独的个体
+        sum = 0 # 统计每个人的总额
+        for sales in data[1:]: # 遍历除名字外的义卖款
+            sum += int(sales) # 将所有的义卖款相加
+        new_data = data[0] + str(sum) + "\n"
+        list1.append(new_data) # 将所有的数据放进列表中
+
+with open(r"D:\python课件\文件读写\new_sales_list.txt","w",encoding="utf-8") as file:
+    file.writelines(list1) # 只能添加列表
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