save project

func.py

+new_data=''
 with open(r'C:\Users\GCJYm\Desktop\book.txt','r',encoding='utf-8')as file1:
 with open(r'C:\Users\GCJYm\Desktop\book.txt','r',encoding='utf-8')as file1:
     for data in file1:
     for data in file1:
         if '小强:10本' in data: 
         if '小强:10本' in data: 
-            print('小强在文件中')
+            data=data.replace('小强在文件中')
         if '小兰:10本' in data:
         if '小兰:10本' in data:
-            print('小兰在文件中')
+            data=data.replace('小兰在文件中')
+        new_data +=data
+
+with open(r'C:\Users\GCJYm\Desktop\book.txt','w',encoding='utf-8')  as file1:
+    file1.write(new_data)
+
+with open(r'C:\Users\GCJYm\Desktop\book.txt','r',encoding='utf-8')  as file1:
+    a=file1.read()
+    print(a)
+
+
+
+
+
+
+