save project

diy pro.py

+new_date = ""
 with open(r'C:\Users\连哥\Desktop\test.txt','r',encoding = 'utf-8') as file:
     for date in file:
-        print(date)
-    if '小强:10本' in file:
-        print('在')
-    else:
-        print('不在')
\ No newline at end of file
+        if '小丽:11本' in date:
+            date=date.replace("小丽:11本","小丽:10本")
+        new_date += date
+
+with open(r'C:\Users\连哥\Desktop\test.txt','w',encoding = 'utf-8') as file:
+    file.write(new_date)
\ No newline at end of file