Simple to disk filecache for python. Why? Because I needed it now.

file_cache.py

import json
import stat

DEBUG = True

def debug_cache_data(fn):
    def cache_data(*args):
        if DEBUG and os.path.exists(fn.__name__):
            return json.loads(open(fn.__name__, 'r').read())
        else:
            data = fn(*args)
            if DEBUG:
                open(fn.__name__, 'w').write(json.dumps(data))
        return data
    return cache_data