python -c option

Re: python -c option

Mike wrote:
[color=blue]
> I am very new to Python and read the docs section about having
> python run commands from the command line. I have been successful
> with:
>
> python -c "print 'Hello'"
>
> It prints Hello
>
> In the interpreter I can type 2+2 and it will return 4 but how do
> I do that from the command line?[/color]

#v+

python -c 'print 2+2'

#v-
[color=blue]
> What I am really after is to do some command line processing where
> the output of grep is returning "prog=.0123 4" and I want to beautify
> it so it prints "12%"[/color]

Assuming the output is "prog=.1234 ", you _could_ do ugly things like

#v+

python -c 'import sys; exec(sys.stdin. readline()); print "%d%%" % (prog*100,)'

#v-

but why not write a small python script instead?


// Klaus

--[color=blue]
><> unselfish actions pay back better[/color]