Some cleanup in the column module, though I suspect there's more to do here.  The main difference is that most of the __getattr__ in the ColDefs class has been replaced by @lazyproperty descriptors.  The functionality here is the same, but I think it's a bit cleaner than having really long __getattr__s with long if/elif blocks.
Some cleanup in the column module, though I suspect there's more to do here.  The main difference is that most of the __getattr__ in the ColDefs class has been replaced by @lazyproperty descriptors.  The functionality here is the same, but I think it's a bit cleaner than having really long __getattr__s with long if/elif blocks.

git-svn-id: 0dd54ea0a764db829c3ced410e66d9e69022d4f0@794 ed100bfc-0583-0410-97f2-c26b58777a21

spacetelescope/PyFITS,spacetelescope/PyFITS,embray/PyFITS,embray/PyFITS,embray/PyFITS,embray/PyFITS