Re: Noob Q: subclassing or wrapping file class

2009-09-16 Thread Steven D'Aprano
On Wed, 16 Sep 2009 23:06:18 +, kj wrote: >>Instead of: > >>x.__getattr__('name') > >>write this: > >>getattr(x, 'name') > > This did the trick. For the record, it's fairly unusual to call double-underscore special methods directly. Any time you think you need to, it's worth a rethink.

Re: Noob Q: subclassing or wrapping file class

2009-09-16 Thread Terry Reedy
kj wrote: I'm trying to get the hang of Python's OO model, so I set up this conceptually simple problem of creating a new file-like class to read a certain type of file. The data in this type of file consists of multiline "chunks" separated by lines consisting of a single ".". My first crack a

Re: Noob Q: subclassing or wrapping file class

2009-09-16 Thread kj
In Steven D'Aprano writes: >On Wed, 16 Sep 2009 21:56:09 +, kj wrote: >... >> I thought at first that I could achieve this by overriding __getattr__: >> >> def __getattr__(self, attribute): >> return self.fh.__getattr__(attribute) >> >> But to my surprise this did not work to

Re: Noob Q: subclassing or wrapping file class

2009-09-16 Thread Steven D'Aprano
On Wed, 16 Sep 2009 21:56:09 +, kj wrote: ... > I thought at first that I could achieve this by overriding __getattr__: > > def __getattr__(self, attribute): > return self.fh.__getattr__(attribute) > > But to my surprise this did not work too well. For example, if I use a > Gzip