redirect STDIO in the Python code

[Skaperen]

Why not just replacing sys.stdout and sys.stderr by custom file objects that send the data to the other forms of output?

For example the IDLE IDE interposes in front of these streams to send the output to a tkinter text window instead of the standard files.

when any Python library forks a new process, does it make whatever is in sys.stdout, which may be using some other fd, such as fd 6, instead of fd 1, become fd 1, so that the new process gets it as fd 1 and likewise sys.stderr becomes fd 2?