Re: [Yaml-core] problem in dumping the Object by pyYAML

[Kirill S. <xi...@ga...>]

>      I am trying to save the python object using PyYaml but when i
> implement the __getattr__() funnction, pyYaml throws an error message
> "None type Oject is not callable"
> 
> my testing script
> 
> 
> import yaml
> 
> class Page(yaml.YAMLObject):
>     yaml_tag = u'!Page'
>     def __init__(self, pageName):
>         self.pageName = pageName
>         self.annotations = {}
> 
>     def __repr__(self):
>          return "%s(pageName=%r,annotations=%r)" %
> (self.__class__.__name__,self.pageName, self.annotations)
> 
> 
>     def __getattr__(self, name):
>         if name in self.annotations:
>             return self.annotations[name]
> try:
>     filename = r'D:\d2.yaml'
>     fileObj = file(filename ,'w')
>     yaml.dump(Page('test'), fileObj)
> finally:
>     fileObj.close()
> 
> try:
>     filename = r'D:\d2.yaml'
>     stream = file(filename ,'r')
>     print yaml.load(stream)
> finally:
>     stream.close()
> 
> any one can suggest me how to solve this problem

The bug is in the __getattr__(self, name) method.  You need to add

	raise AttributeError(name)


to the end of the method.  Alternatively you may define custom 
__getstate__/__setstate__ methods.


Thanks,
Kirill