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'
+new_i=''
+with open(r'C:\Users\xc\Desktop\test.txt','r',encoding='utf-8') as file:
+    for i in file:
+        if '小强:10本' in i:
+            i=i.replace('小强:10本','小强:11本')
+        new_i+=i
+
+with open(r'C:\Users\xc\Desktop\test.txt','w',encoding='utf-8') as file:
+    file.write(new_i)
+print(new_i)
\ No newline at end of file

dsag.py

+new_i=''
+with open(r'C:\Users\xc\Desktop\test.txt','r',encoding='utf-8') as file:
+    for i in file:
+        if '小强:10本' in i:
+            i=i.replace('小强:10本','小强:11本')
+        new_i+=i
+
+with open(r'C:\Users\xc\Desktop\test.txt','w',encoding='utf-8') as file:
+    file.write(new_i)
+print(new_i)
\ No newline at end of file