Camel case to underscore converter

converter.py

camel_pat = re.compile(r'([A-Z])')
under_pat = re.compile(r'_([a-z])')


def camel_to_underscore(name):
    return camel_pat.sub(lambda x: '_' + x.group(1).lower(), name)


def underscore_to_camel(name):
    return under_pat.sub(lambda x: x.group(1).upper(), name)


def convert_json(d, convert):
    new_d = {}
    for k, v in d.iteritems():
        new_d[convert(k)] = convert_json(v, convert) if isinstance(v, dict) else v
    return new_d