Find and return a format by name.

    :param name: A string describing the name of the format.

def find_by_name(name):
    """
    Find and return a format by name.

    :param name: A string describing the name of the format.
    """
    for format in FORMATS:
        if name == format.name:
            return format

    raise UnknownFormat('No format found with name "%s"' % name)