save project

123.py

+file1=open(r'C:\Users\ACER\Desktop\test.txt','w',encoding='utf-8')
+file1.write('小兰,12本')
+
+file1.close()
+
+
 new_data=""
 with open(r'C:\Users\ACER\Desktop\test.txt','r',encoding='utf-8') as file1:
-    for a in file1:
+    for data in file1:
         if "小兰,12本\n" in data: 
-            data=data.replace("小兰,12本n","小兰,12本")
-            print("有人~~")
+            data=data.replace("小兰,12本","小兰,13本")
         new_data+=data
 with open(r'C:\Users\ACER\Desktop\test.txt','w',encoding='utf-8') as file1:
     file1.write(new_data)
-print(new_data)
\ No newline at end of file