save project

diy.py

@@ -17,9 +17,19 @@ with open(r'C:\Users\Administrator\Desktop\book.txt','a',encoding='utf-8') as fi
     file.write('小强:10本\n')
     file.write('李明:15本\n')
 
-with open(r'C:\Users\Administrator\Desktop\book.txt','a',encoding='utf-8') as file1；
+new_data=''
+with open(r'C:\Users\Administrator\Desktop\book.txt','r',encoding='utf-8') as file1:                                                                                  
     for data in file1:
-        if '小强:10本\n' in data；
+        if '小强:10本' in data:
+            data = data.replace('小强:10本','小强：11本')
             print('小强的数据在文件中')
-        if '小兰:12本\n' in data；
-            print('小兰的数据在文件中')
\ No newline at end of file
+        if '小兰:12本' in data:
+            data = data.replace('小兰：12本','小兰：14本')
+        new_data += data    
+
+with open(r'C:\Users\Administrator\Desktop\book.txt','w',encoding='utf-8') as file1:
+    file1.write(new_data)
+
+with open(r'C:\Users\Administrator\Desktop\book.txt','r',encoding='utf-8') as file1：
+    a = file1.read()
+    print(a)
\ No newline at end of file