adding values from a csv column and getting the mean. beginner help

[Mark Lawrence]

On 11/12/2013 20:03, Chris Angelico wrote:
> On Thu, Dec 12, 2013 at 7:00 AM, Mark Lawrence <breamoreboy at yahoo.co.uk> wrote:
>> I use the alternative X for a mandatory argument X.
>
> Also common, but how do you specify a keyword, then? Say you have a
> command with subcommands:
>
> $0 foo x y
> Move the foo to (x,y)
> $0 bar x y z
> Go to bar X, order a Y, and Z it [eg 'compress', 'gzip', 'drink']
>
> How do you show that x/y/z are mandatory args, but foo/bar are
> keywords to be typed exactly? In some formats italicized text can make
> that distinction, but not in pure text.
>
> ChrisA
>

Haven't a clue off the top of my head so read all about it here 
https://github.com/docopt/docopt

-- 
My fellow Pythonistas, ask not what our language can do for you, ask 
what you can do for our language.

Mark Lawrence