Christopher Emery wrote:
> Hello All,
>
> OS = Raspbain Wheezy & Ubuntu 12.10 (both updated daily)
>
> Python Version = 3.2 & 3.3
> Python Understanding = Beginner (very basic - just started)
>
> See paste bin for code, has 44 lines, code does not give any errors.
> http://pastebin.com/2tLHvUym
>
> Okay, I am writing to ask a few question and provide what I have done
> already.
>
> When using argparse.argument is it wise to use dest="" even if you
> don't mind having it set automatic to the arg option such as -u will
> become u="None" if it no arg is passed?
dest determines the attribute name under which the option is stored. I
rarely set it explicitly; instead I provide a --long-option:
cmdline_parser.add_argument(
"-u", "--url-source",
help="the url of where the file can be downloaded.")
> Because there are options that can be added to each .add_argument such
> as help=, action= is it a good idea to set each one of them even if
> the default behavior is what you want? I thinking future proofing
> wise.
To my eyes this is just noise.
> In my formatting of my function which will be one of many, am I laying
> the code out in a way that will become a good habit or should I do it
> different? If so how?
>
> Based on my comments within the function am I understanding what is going
> on?
>
> At the end I use a print() to see if all is being passed or not being
> passed through the cmdline, my question for you is if I want to access
> the varibles that are passed through the return args, do I just take
> the function like this:
> outside_of_functions_var = cmdline_parser()
> Does this make outside_of_functions_var a dict or list or other?
Neither a dict nor a list, it is an argparse.Namespace object. You can
access commandline options as its attributes:
args = cmdline_parser()
print(args.url_source)
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