save project

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'
 # 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\test.txt','r',encoding='utf-8') as file1:  
+new_data=''
+with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as file1: 
     for data in file1:
     for data in file1:
         if "小兰：12本" in data:
         if "小兰：12本" in data:
-            print("他在文件中")
+            data=data.replace('小兰:12本','小兰:14本')
+        new_data +=data
+
+with open(r'C:\Users\Administrator\Desktop\test.txt','w',encoding='utf-8') as file1: 
+    file1.write(new_data)
+
+with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as file1: 
+    a=file1.read()
+    print(a)
     
     
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