save project

diy.py

+new_data=''
+# 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'D:\kun\kun2.txt','r',encoding='utf-8') as file1:
+    #file1.write('小强:10本')
+    #file1.write('李明:15本')
+    for data in file1:
+        if '小强:10本' in data:
+            data=data.replace('小强:10本','小强:11本')
+        new_data +=data
+
+with open(r'D:\kun\kun2.txt','w',encoding='utf-8') as file1:
+    file1.write(new_data)            
\ No newline at end of file