save project

diy.py

+new_data=''
+with open(r'C:\Users\LENOVO\Desktop\test.txt','r',encoding='utf-8')as file:
+    for data in file:
+        if '小强：12本' in data:
+            data=data.replace('小强：12本','小强：11本')
+        new_data+=data
+with open(r'C:\Users\LENOVO\Desktop\test.txt','w',encoding='utf-8')as file:
+    file.write(new_data)
\ No newline at end of file