index = "{0:0{1}}".format(index + 1, index_len)

    if not is_trivial(value):

        return "{0}_{1}".format(name, index)

    try:

        value = str(value)

    except UnicodeEncodeError:

        # fallback for python2

        value = value.encode('ascii', 'backslashreplace')

    test_name = "{0}_{1}_{2}".format(name, index, value)

    return re.sub(r'\W|^(?=\d)', '_', test_name)

    # Add zeros before index to keep order

    index = "{0:0{1}}".format(index + 1, index_len)

    if not is_trivial(value):

        if type(value) is dic and "api_name" in value.keys():

            value=value["api_name"]

        else:

            return "{0}_{1}".format(name, index)

    try:

        value = str(value)

    except UnicodeEncodeError:

        # fallback for python2

        value = value.encode('ascii', 'backslashreplace')

    test_name = "{0}_{1}_{2}".format(name, index, value)

    return re.sub(r'\W|^(?=\d)', '_', test_name)