def get_definitiongroup(target_platform):
    """
    Return ItemDefinitionGroup namespace depends on platform and target

    :param target_platform: wanted target: debug | release
    :type target_platform: tuple[str,str]
    :return: wanted ItemDefinitionGroup namespace
    :rtype: str
    """
    item = (
        '//ns:ItemDefinitionGroup[@Condition="\'$(Configuration)|$(Platform)\'==\'{}\'"]'
        .format('|'.join(target_platform)))
    return item
