Hi, There are two wornings :failed to open file. No such file, but the file egxist. It is below.

Question

https://code.sololearn.com/wpP6XHf4KLs6/?ref=app
https://code.sololearn.com/wUgbn6UUovxQ/?ref=app

Answer 1

The environment your program runs in is a clean sandbox with nothing available. Your code can write the file and read it afterwards. Otherwise, you can run elsewhere (don't ask me how or where as I don't know) that you may create the file to use.

Answer 2

OK, Thank You Mr. Wells