def get_inclusion_number(custom_list):
    """
    Function for getting dict with number of inclusion of element in list.

    :param custom_list: list
        List for analysing

    :return:
        Dict with number of inclusions for every element.
    """
    if not isinstance(custom_list, list):
        raise TypeError

    result = {}

    for elem in custom_list:
        if elem in result:
            result[elem] += 1
        else:
            result[elem] = 1

    return result