save project

diy.py

@@ -3,12 +3,21 @@
 # file.write('小兰:12本\n小丽:11本\n李文:9本\n张伟:16本')
 # file.close()
 
-# with open(r'C:\Users\Makcoo-Bellcode\Desktop\book.txt','a',encoding='utf-8') as file:
-#     file.write('小强:12本\n李明:15本')
+with open(r'C:\Users\Makcoo-Bellcode\Desktop\book.txt','a',encoding='utf-8') as file:
+     file.write('小强:12本\n李明:15本')
 
+n_data=''
 with open(r'C:\Users\Makcoo-Bellcode\Desktop\book.txt','r',encoding='utf-8') as file:
     for data in file:
         if '小强:10本' in data:
-            print('小强在里面！')
+            data=data.replace('小强:10本','李明:11本')
         if '小兰:12本' in data:
-            print('小兰在里面！')
\ No newline at end of file
+            data=data.replace('小兰:12本','李明:11本')
+        n_data+=data
+
+with open(r'C:\Users\Makcoo-Bellcode\Desktop\book.txt','w',encoding='utf-8') as file:
+      file.write(n_data)
+
+with open(r'C:\Users\Makcoo-Bellcode\Desktop\book.txt','r',encoding='utf-8') as file:
+    a=file.read()
+    print(a)                  
\ No newline at end of file