save project

diy1.py

-with open(r"C:\Users\2hao\Desktop\新建文件夹\chen.txt","r",encoding="utf-8")as file1:
+with open(r"C:\Users\2hao\Desktop\新建文件夹\chen.txt","w",encoding="utf-8")as file1:
     for data in file1:
     for data in file1:
-        if '123' in data:
+        if 'h:19' in data:
             print('数据在文件中')
             print('数据在文件中')
+data.replace('h:19','h:20')
\ No newline at end of file