[Python-markdown-discuss] second Markdown() instance clobbers the first?

[Eric A. <er...@ab...>]

I'm using Markdown with Django, not as a template filter but by  
running database text through markdown as it is saved, so that the  
markdown text is saved into one field, and HTML converted text is  
saved into another field. I want different behavior for different  
models, so I instantiate two Markdown objects, one for filtering blog  
entry text (safe_mode is off) and one for filtering comment text  
(safe_mode is set to 'remove').

Both are instantiated at the top of a single models.py module, like  
this:

safe_md = Markdown()
remove_md = Markdown(safe_mode='remove')

What I've found is that the second instance seems to override the  
first. Blog text run through safe_md.convert() has its HTML removed,  
as though its safe_mode were set to 'remove'. I "fixed" the problem by  
commenting out the second instance, and later I moved it inside a  
function where it's hidden.

This isn't at all how I expected this to work, and I wonder if it's a  
bug with Markdown or with my expectations. I thought it might have had  
to do with Django, perhaps threading or something, but it behaves the  
same way in the Python interpreter. Can someone explain what's going  
on here?

TIA,

Eric