how to attach execute commands to button?

Hi,

Sorry if this is an obvious question but I am new to python and can't seem to find an easy example for what I want to to.

I would like to define a button with tinker and then have that execute a scriptable shell binary file with options.

In TCL/TK, this would be a simple example ;

Where shake is an executable defined in the environment and test.shk is one of its ascii text process input files.

So, I have looked as os.system and subprocess but I can't see an easy method to do this, like the above, simple 'hello world' type thing.

So in summary, if I went to a shell and typed shake -x test.sk, the shake binary would process its input file test.shk with the argument x and everything is ok. Calling {exec shake -x test.sk} from a tcl/tk script would do the same thing. I just can't seem to find a way to rewrite my example above using python.

Thanks for any help.

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