save project

diy.py

+new_data=''
+with open(r'C:\Users\dell\Desktop\test.txt','r',encoding='utf-8')as file1:
+    for data in file1:
+        if '李明:15本'in data:
+            data=data.replace('李明:15本','李明:16本')
+        new_data=data+new_data
+with open(r'C:\Users\dell\Desktop\test.txt','w',encoding='utf-8')as file1:
+    file1.write(new_data)
+with open(r'C:\Users\dell\Desktop\test.txt','r',encoding='utf-8')as file1:
+    a=file1.read()
+    print(a)
\ No newline at end of file