How to send a var to stdin of an external software

[Sion Arrowsmith]

Benjamin Watine  <watine at cines.fr> wrote:
>How can I do this ? I would like a function like that :
>
>	theFunction ('cat -', stdin=myVar)
>
>I don't need to get any return value.

http://docs.python.org/lib/node534.html says this is spelt

myVar = subprocess.Popen(["cat", "-"], stdout=subprocess.PIPE).communicate()[0]

(Probably not obvious how to find this if you've not come across the
backtick notation in shell or Perl.)

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