save project

diy.py

@@ -3,8 +3,11 @@ file1=open(r'C:\Users\Administrator\Desktop\test.txt','w',encoding='utf-8')
 file1.write('小兰；12本')
 file1.close()
 with open(r'C:\Users\Administrator\Desktop\test.txt','a',encoding='utf-8') as file1:
-    file.write('李强；10本\n')
+    file.write('c\n')
+new-data="
 with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as file1:
     for data in file1:
         if '李强；10本' in data:
+            data=data.replace('李强；10本','李强，11本')
+        new_data+=data
             print('数据在文件中')
\ No newline at end of file