save project

diy.py

@@ -11,8 +11,20 @@
 #file1.write('小明：12本\n')
 #file1.write('小明：12本\n')
 #file1.close()
 #file1.close()
 
 
+#with open(r'C:\Users\86138\Desktop\book.txt','r',encoding='utf-8')as file1:
+    #for data in file1:
+        #if '小兰：12本' in data:
+            #print('小兰在数据中')
+
+new_data=''
 with open(r'C:\Users\86138\Desktop\book.txt','r',encoding='utf-8')as file1:
 with open(r'C:\Users\86138\Desktop\book.txt','r',encoding='utf-8')as file1:
     for data in file1:
     for data in file1:
         if '小兰：12本' in data:
         if '小兰：12本' in data:
-            print('小兰在数据中')
+            data=data.replace('小兰：12本','小兰：14本')
+        new_data+=data
+with open(r'C:\Users\86138\Desktop\book.txt','w',encoding='utf-8')as file1:
+    file1.write(new_data)
 
 
+with open(r'C:\Users\86138\Desktop\book.txt','r',encoding='utf-8')as file1:
+    a=file1.read()
+    print(a)
\ No newline at end of file