save project

diy3.py

 # 完成修改数据前的遍历和条件判断，找下'小强：10本'在不在数据中，以及小兰的数据'小兰：12本'在不在
-with open(r'C:\Users\CM\Desktop\book.txt','r',encoding='utf-8') as file1:
+now_data=''
+with open(r'C:\Users\CM\Desktop\test.txt','r',encoding='utf-8') as file1:
     for data in file1:
         if '小强：10本' in data:
-            print('小强数据在文件中')
+            data=data.replace('小强：10','小强：11')
+        new_data=new_data+data
         if '小兰：12本'in data:
-            print('小兰
\ No newline at end of file
+           data.replace('小兰：12本','小兰：14本')
+        new_data=new_data=data
+print(new_data)
+
+while open(r'C:\Users\CW\Desktop\test.txt','w',encoding='utf-8') as file1:
+     file1.write(new_data)
\ No newline at end of file