def user_name_to_file_name(user_name):
    """
    Provides a standard way of going from a user_name to something that will
    be unique (should be ...) for files

    NOTE: NO extensions are added

    See Also:
    utils.get_save_root
    """

    # Create a valid save name from the user_name (email)
    # ----------------------------------------------------------------------
    # Good enough for now ...
    # Removes periods from email addresses, leaves other characters
    return user_name.replace('.', '')