save project

diy.py

+new_data = ''
+with open(r"C:\Users\编程电脑1\Desktop\新建文件夹\新建文本文档.txt",'r',encoding = 'utf-8') as file1:
+    for data in file1:
+        if '小兰:12本' in data:
+            data=data.replace('小兰:12本','小兰:10本')
+        new_data+=data
+with open(r"C:\Users\编程电脑1\Desktop\新建文件夹\新建文本文档.txt",'w',encoding = 'utf-8') as file1:
+    file1.write(new_data)
\ No newline at end of file