Constant Diff

utils.py

def diff(module1, module2):
    """Determine the difference in constant definitions between two modules.

    :param module1: First module with constants.
    :param module2: Second module with constants.
    """
    _and = {}
    _or = {}
    _xor = {module1: {}, module2: {}}

    for attribute in dir(module1):
        if attribute == attribute.upper():
            constant = getattr(module2, attribute, None)

            if constant is None:
                _xor[module1][attribute] = constant
            elif constant == getattr(module1, attribute):
                _and[attribute] = constant
            else:
                _or[attribute] = constant

    for attribute in dir(module2):
        if attribute == attribute.upper():
            constant = getattr(module1, attribute, None)

            if constant is None:
                _xor[module2][attribute] = constant
            if constant != getattr(module2, attribute):
                _or[attribute] = constant

    return (_and, _or, _xor)