Lucas Malor wrote:
> Hello all. I'm trying to do a little script. Simply I want to make a list
> of all options with them default values. If the option is not specified in
> the command line, the script must try to read it in a config.ini file. If
> it's not present also there, it must set the default value.
>
> The problem is I maked a simple list for this:
>
> optname = [
> [ "delete", False ],
> [ "file", "file" ],
> [ "dir", "" ],
>
> But I must check that the option was specified in command line:
>
> (options, args) = parser.parse_args()
> for opt in optname :
> if not options.opt[0] :
> # read the options from config.ini
>
> The problem is options is an instance, so options."delete", for example,
> is wrong; I should pass options.delete . How can I do?
Use getattr():
for name, default_value in optname:
if getattr(options, name) == default_value:
value = ... # read value from config file
setattr(options, name, value)
Personally, I would always read the config file, use the values found there
to set up the parser and avoid such post-processing.
Peter
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