Re: [Configobj-develop] Default Values

[Fuzzyman <fuz...@vo...>]

Mark Leonard wrote:
> According to the docs:
> http://www.voidspace.org.uk/python/configobj.html#default-values
> "You can set a default value in your check. If the value is missing 
> from the config file then this value will be used instead."
>
> I think I'm making an incorrect assumption about retrieving default 
> values from the dict, as illustrated here:
>
> File test.spec containing only:
> key1 = integer(0, 30, default=15)
> key2 = integer(default=15)
>
> File test.conf containing only:
> key1 = 5
>
> >>> c = ConfigObj( 'test.conf', configspec='test.spec' )
> >>> c
> {'key1': '5'}
> >>> c.configspec
> {'key2': 'integer(default=15)', 'key1': 'integer(0, 30, default=15)'}
> >>> c['key1']
> '5'
> >>> c['key2']
> Traceback (most recent call last):
>  File "<stdin>", line 1, in ?
>  File "C:\Python24\Lib\site-packages\configobj.py", line 337, in 
> __getitem__
>    val = dict.__getitem__(self, key)
> KeyError: 'key2'
>
> Shouldn't this return the default value, in this case 15? Is there a 
> different method I should be using for retrieving values? I can't find 
> anything in the documentation or via introspection. I specifically 
> want the defaults specified in an external file and not in the code 
> using something like c.get('key2',15).
>
Your logic is correct - but missing one step.

The default values are filled in by the validation process (as is the 
type conversion to integers).

 >>> from configobj import ConfigObj
 >>> from validate import Validator
 >>> c = ConfigObj( 'test.conf', configspec='test.spec' )
 >>> c
{'key1': '5'}
 >>> c.configspec
{'key2': 'integer(default=15)', 'key1': 'integer(0, 30, default=15)'}
 >>> v = Validator()
 >>> test = c.validate(v)
 >>> if test != True:
...    print 'Something went wrong ;-)'
 >>> c['key2']
15

Untested, but should work. ;-)

Let me know if it doesn't.

> I'm using configobj version 4.2.0beta2
>
I changed a lot in the implementation of unicode from 4.2.0 beta 2 to 
the released version, as well as other tinkerings. (See the homepage 
http://www.voidspace.org.uk/python/configobj.html for a download link). 
I would highly recommend using the latest version.

All the best,

Fuzzyman
http://www.voidspace.org.uk/python/index.shtml

> Cheers,
> -Mark
>
>
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