fancy_config.py

from ConfigParser import RawConfigParser, NoOptionError

class SectionProxy(object):
    __slots__ = ('_section_name', '_config')

    def __init__(self, config, section_name):
        self._section_name = section_name
        self._config = config

    def __getattr__(self, name):
        try:
            return self._config.get(self._section_name, name)
        except NoOptionError:
            raise AttributeError("No option %r in section %r" % (self._section_name, name))
        
class Config(object):
    """
    Object to store configuration. You can access
    config items using normal attribute lookup

    >>> from StringIO import StringIO
    >>> config = Config(StringIO(SAMPLE_CONFIG))
    >>> config._config.get("section1", "a")
    '10'
    >>> config.section1.a
    '10'
    >>> config.section2.b
    'ala'
    >>> hasattr(config, "section3")
    False
    >>> hasattr(config.section1, "invalid")
    False
    """

    def __init__(self, config_file):
        self._config = RawConfigParser()
        self._config.readfp(config_file)

    def __getattr__(self, name):
        if self._config.has_section(name):
             return SectionProxy(self._config, name)
        raise AttributeError("No config section %r" % name)

if __name__ == "__main__":
    import doctest
    SAMPLE_CONFIG = """
[section1]
a = 10

[section2]
b = ala
"""
    doctest.testmod()