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'
+new_data=''
 with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8')as file1:
 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('数据在文件中')    
+            data=data.replace('小兰:12本','小兰:13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)    
 #file1.close()
 #file1.close()
 #file1=open(r'C:\Users\Administrator\Desktop\text.txt','r',encoding='utf-8')
 #file1=open(r'C:\Users\Administrator\Desktop\text.txt','r',encoding='utf-8')
     #file1.write('小丽:11本\n')    
     #file1.write('小丽:11本\n')