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os.system(r"ls") prints to screen??

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Xah Lee wrote:
> does anyone know why the folllowing prints to the screen?
> # python
> import os
> os.system(r"ls")

Steve Holden wrote:
> It only prints to the screen when standard output of the invoking
> process is the screen. The sub-process forked by os.system inherits
> stdin stdout and stderr from the invoking process.

Thanks.

 Xah
 xah at xahlee.org
∑ http://xahlee.org/

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