Re: [Configobj-develop] [python] problems with non standard types like, wx.Colour

[Michael F. <fuz...@vo...>]

Stef Mientki wrote:
> [snip...]
>> ConfigObj is not *intended* to read in (or write out) non-standard types 
>> in unrepr mode. A way of extending unrepr mode for this would be nice (a 
>> way of recognising non standard types and reprs in the read/write 
>> phases), but as I don't use unrepr mode it would have to be implemented 
>> by someone else. It shouldn't actually be very hard - the difficult part 
>> is deciding on a clean and simple API (a dictionary of names mapping to 
>> types - although 'wx.Color' might be a problem because unrepr uses the 
>> Python parser and that is a dotted name rather than just a name).
>>
>> Your fix - to write the value out as a tuple if it can be converted is 
>> clever, but in general it might not 'do the right thing' when read back 
>> in.  (For users who aren't aware of this behaviour.) In general I prefer 
>> to raise an exception than do clever tricks.
>>
>> For handling custom types you can use 'validate.py' and configspecs, but 
>> off the top of my head I don't think that they work well with unrepr mode.
>>
>>   
>>     
> Ok, that's all too complex for me (at least for now).
> As I want to store fairly complex structures, with a lot of special classes,
> I'm also not sure if this really solves everything.
>   

Right.
>> How about using the walk method to recursively change wx.Colour objects 
>> into tuples before writing?
>>   
>>     
> never heard of walk, again too complex for now ;-)
>   

Walk is just a recursive method for calling a function on all the 
members in a config. It is documented and probably underused. :-)

Michael
> So thanks again,
> I'm glad to know that the work around I use is not completely nonsense !
>
> cheers,
> Stef Mientki
>
>
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