Reverse pystache

I have this script:

import pystache
template = 'Hi {{person}}!'
data = {'person': 'Mom'}
txt = pystache.render(template, data)
print txt

      

        
        
        
      

    

What gives:

Hi Mom!

      

        
        
        
      

    

Is there a way to do something like:

data = reverse_pystache(txt, template)

      

        
        
        
      

    

To return a dictionary:

>>> data
{'person': 'Mom'}

      

        
        
        
      

    

That is, by reusing the template that was used to generate the text and the actual text, extract the data from the text.