save project

l.py

@@ -4,7 +4,12 @@
 #with open(r"D:\abc.txt","a",encoding="utf-8") as file:
 #with open(r"D:\abc.txt","a",encoding="utf-8") as file:
 #    file.write('小强：10本\n')
 #    file.write('小强：10本\n')
 
 
+new_data=""    
 with open(r"D:\abc.txt","r",encoding="utf-8") as file:
 with open(r"D:\abc.txt","r",encoding="utf-8") as file:
     for data in file:
     for data in file:
         if "小强：10本" in data:
         if "小强：10本" in data:
-            print('数据在其中')
+            data=data.replace("小强：10本","小强：11本")
+        new_data+=data
+with open(r"D:\abc.txt","w",encoding="utf-8") as file:
+    file.write(new_data)
+