def get_hex_values()

in tls-table.py [0:0]
89 lines of code
28 McCabe index (conditional complexity)

def get_hex_values():
    # Grab the list from the IANA
    print('Retrieving IANA cipher List', file=sys.stderr)
    try:
        r = requests.get(IANA_URL)
        soup = bs(r.text, 'html.parser')\
            .select('table[id="table-tls-parameters-4"]')[0]\
            .find_all('tbody')[0]

        # Store all the ciphers away
        cipher_hex_values = OrderedDict()

        for row in soup.find_all('tr'):
            columns = [ x.string for x in row.find_all('td') ]

            # For now, we can ignore any IANA entries with '-' or '*' in them
            if '-' not in columns[0] and '*' not in columns[0] and columns[1] != 'Unassigned' and columns[1] != 'Reserved':
                cipher_hex_values[ columns[0] ] = {
                    'GnuTLS': '',
                    'IANA': columns[1],
                    'NSS': '',
                    'OpenSSL': ''
                }

    except:
        print('Unable to retrieve or parse IANA cipher list', file=sys.stderr)

    # Grab the list from NSS (Mozilla)
    print('Retrieving NSS cipher list', file=sys.stderr)
    try:
        r = requests.get(NSS_URL)
        for line in r.text.split('\n'):
            # A typical line would look like: #define TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   0xC02F
            if '#define TLS' in line and '0x' in line:
                cipher = line.split()[1]

                hex = line.split()[2].upper()
                code_point = '0x' + hex[2:4] + ',0x' + hex[4:6]

                if code_point in cipher_hex_values:
                    cipher_hex_values[code_point]['NSS'] = cipher
                # 0x00,0x60-66  Reserved to avoid conflicts with widely deployed implementations
                elif not code_point.startswith('0x00,0x6'):
                    print('  Warning: code point {code_point} ({cipher}) not in IANA registry'.format(
                        code_point=code_point, cipher=cipher
                    ), file=sys.stderr)

    except:
        print('Unable to retrieve or parse NSS cipher list', file=sys.stderr)

    # Grab the list from OpenSSL
    print('Retrieving OpenSSL cipher list', file=sys.stderr)
    try:
        # OpenSSL splits up their code points and their text names for them
        openssl_hex_values = {}
        openssl_txt_values = {}

        r = requests.get(OPENSSL_URL)
        for line in r.text.split('\n'):
            if line.startswith('# define TLS1_CK'):
                cipher = line.split()[2].split('TLS1_CK_')[-1]
                hex = line.split()[3]
                code_point = '0x' + hex[6:8] + ',0x' + hex[8:10]

                # e.g., ECDHE_RSA_WITH_AES_128_GCM_SHA256 -> 0x0C,0x2F
                openssl_hex_values[cipher] = code_point
            elif line.startswith('# define TLS1_3_CK'):
                cipher = line.split()[2].split('TLS1_3_CK_')[-1]
                hex = line.split()[3]
                code_point = '0x' + hex[6:8] + ',0x' + hex[8:10]

                # e.g., TLS1_3_CK_AES_128_GCM_SHA256 -> 0x13,0x01
                openssl_hex_values[cipher] = code_point
            elif line.startswith('# define TLS1_TXT'):
                cipher = line.split()[2].split('TLS1_TXT_')[-1]
                text = line.split()[3][1:-1]

                # e.g., ECDHE_RSA_WITH_AES_128_GCM_SHA256 -> ECDHE-RSA-AES128-GCM-SHA256
                openssl_txt_values[cipher] = text
            elif line.startswith('# define TLS1_RFC'):
                cipher = line.split()[2].split('TLS1_RFC_')[-1]
                text = line.split()[3][1:-1]

                # e.g., TLS1_RFC_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 -> TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
                openssl_txt_values[cipher] = text
            elif line.startswith('# define TLS1_3_RFC'):
                cipher = line.split()[2].split('TLS1_3_RFC_')[-1]
                text = line.split()[3][1:-1]

                # e.g., TLS1_3_RFC_AES_128_GCM_SHA256 -> TLS_AES_128_GCM_SHA256
                openssl_txt_values[cipher] = text

        for key, value in openssl_hex_values.items():
            if value in cipher_hex_values:
                cipher_hex_values[value]['OpenSSL'] = openssl_txt_values[key]
            else:
                print('  Warning: code point {code_point} ({cipher}) not in IANA registry'.format(
                    code_point=value, cipher=key
                ), file=sys.stderr)
    except:
        print('Unable to retrieve or parse OpenSSL cipher list', file=sys.stderr)

    # Grab the list from GnuTLS
    print('Retrieving GnuTLS cipher list', file=sys.stderr)
    try:
        r = requests.get(GNUTLS_URL)

        # Some lines look like: #define GNUTLS_DH_ANON_3DES_EDE_CBC_SHA1 { 0x00, 0x1B }
        # Other look like:      #define GNUTLS_ECDHE_ECDSA_CAMELLIA_128_CBC_SHA256 { 0xC0,0x72 }
        for line in r.text.split('\n'):
            if line.startswith('#define GNUTLS_') and '{' in line:
                cipher = line.split()[1][3:]
                code_point = line.split('{')[-1].replace(' ', '').replace('}', '').upper().replace('X', 'x')

                if code_point in cipher_hex_values:
                    cipher_hex_values[code_point]['GnuTLS'] = cipher
                # 0x00,0x60-66  Reserved to avoid conflicts with widely deployed implementations
                elif not code_point.startswith('0x00,0x6'):
                    print('  Warning: code point {code_point} ({cipher}) not in IANA registry'.format(
                        code_point=code_point, cipher=cipher
                    ), file=sys.stderr)
    except:
        print('Unable to retrieve or parse GnuTLS cipher list', file=sys.stderr)

    print('\n', file=sys.stderr)
    return cipher_hex_values