auto save

diy.py

-# 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：9本'、'张伟：16本'
+with open(r'C:\Users\Administrator\Desktop\lyq.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)
+    final_sum.append(result)
+
+with open(r'C:\Users\Administrator\Desktop\lyq.txt','a',encoding='utf-8') as file:
+    file.writelines(final_sum)
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