redirect STDIO in the Python code

[Skaperen]

i need to have the ability to do standard I/O redirection within a CLI script in Python. I've done this a few times in C. to do this in Python i could just follow the way in C using os.open(), os.dup2(), and os.close(). but that might not let Python know what is going on, if it needs to know. is there a good Pythonic way to do this?