save project

diy.py

@@ -9,6 +9,12 @@
 with open(r"C:\Uses\CM\Desktop\book.txt","r",encoding="utf-8")
 with open(r"C:\Uses\CM\Desktop\book.txt","r",encoding="utf-8")
     for data in  file1:
     for data in  file1:
         if "小强:10本" in data:
         if "小强:10本" in data:
-            print("小强数据在文件中")
+            data=data.replace("小强:10本","小强:11本")
         if "小兰:12本" in data:
         if "小兰:12本" in data:
-            print("小兰数据在文件中")
+            data=data.replace("小兰:12本","小兰:14本")
\ No newline at end of file
+        new_data+=data
+with open(r"C:\Uses\CM\Desktop\book.txt","w",encoding="utf-8")
+    file1.write(new_data)
+with open(r"C:\Uses\CM\Desktop\book.txt","r",encoding="utf-8")
+    a=file1.read()
+    print(a)
\ No newline at end of file