How to load a more useful ini file for use with pyramid.

settings.py

from ConfigParser import RawConfigParser

def load_settings(global_config, app_settings):
    """
    Load an INI file with multiple sections into a single dictionary.
    
    .. code-block:: ini
    
       [sqlalchemy]
       url = sqlite://%(here)s
       
       [auth]
       secret = foo
       expires_in = 3600
       
       [app:myapp]
       use = egg:myapp
       
    This file can be loaded and used via:
    
    .. code-block:: python
    
       def main(global_conf, **settings)
           settings = load_settings(global_conf, settings)
           config = Configurator(settings=settings)
           
           engine = engine_from_config(settings, prefix='sqlalchemy.')
           dbmaker = sessionmaker(bind=engine)
           config.registry['dbmaker'] = dbmaker
           
           return config.make_wsgi_app()
    """
    config_file = global_config.get('__file__')
    
    parser = RawConfigParser()
    parser.read(config_file)

    settings = {}
    for section in parser.sections():
        prefix = section.replace(':', '.')
        for k, v in parser.items(section):
            settings[prefix + '.' + k] = v
            
    settings.update(app_settings)
    return settings