Pls. help me recreate shell trick

[Nicola Musatti]

Thanks to both Fernando and Daniel for your suggestions. However, I
probably didn't explain myself very clearly. My aim is not only to
provide display only, debug mode for external commands, but also for
possibly disrupting Python statements. One example could be:

import shutil
shutil.copyfile(src,dest)

Thanks for your help.
Nicola Musatti