Convert Javascript encryption Algorithm to Python

I have a JavaScript Encryption Algorithm, which I am trying to convert into Python. I tried studying the algorithm, though it is not too much complex but I am unable to fully understand and convert it to the Python code. The JavaScript code is

var grecaptcha = [];
enc = function (a) {
var keyBytes = CryptoJS.PBKDF2('lrvq/wyDf6tqhxvg8NuIDQ==', 'Ivan Medvedev', { keySize: 48 / 4, iterations: 1000 });
// take first 32 bytes as key (like in C# code)
var key = new CryptoJS.lib.WordArray.init(keyBytes.words, 32);
// skip first 32 bytes and take next 16 bytes as IV
var iv = new CryptoJS.lib.WordArray.init(keyBytes.words.splice(32 / 4), 16);
// use the same encoding as in C# code, to convert string into bytes
var data = CryptoJS.enc.Utf16LE.parse(a);
var encrypted = CryptoJS.AES.encrypt(data, key, { iv: iv });
$("#capBBC").val(encrypted.toString());
}

The Python code that I was able to write is

from Crypto.Protocol.KDF import PBKDF2
from Crypto.Cipher import AES
from Crypto.Util.Padding import pad

def enc(a):
    key = PBKDF2("lrvq/wyDf6tqhxvg8NuIDQ==", "Ivan Medvedev", dkLen=48, count=1000)
    iv = key[32:]
    data = a.encode('utf-16le')
    
    cipher = AES.new(key, AES.MODE_CBC, iv)
    encrypted = cipher.encrypt(pad(data, AES.block_size))
    
    return encrypted.hex()

print(enc("Cat"))

This code raise the following exception

Traceback (most recent call last):
  File "C:UsersFarhan AhmedDesktopcodePythonKiara Snickersdel.py", line 16, in <module>
    print(enc("Cat"))
  File "C:UsersFarhan AhmedDesktopcodePythonKiara Snickersdel.py", line 11, in enc
    cipher = AES.new(key, AES.MODE_CBC, iv)
  File "C:UsersFarhan AhmedAppDataLocalProgramsPythonPython310libsite-packagesCryptoCipherAES.py", line 232, in new
    return _create_cipher(sys.modules[__name__], key, mode, *args, **kwargs)
  File "C:UsersFarhan AhmedAppDataLocalProgramsPythonPython310libsite-packagesCryptoCipher__init__.py", line 79, in _create_cipher
    return modes[mode](factory, **kwargs)
  File "C:UsersFarhan AhmedAppDataLocalProgramsPythonPython310libsite-packagesCryptoCipher_mode_cbc.py", line 274, in _create_cbc_cipher
    cipher_state = factory._create_base_cipher(kwargs)
  File "C:UsersFarhan AhmedAppDataLocalProgramsPythonPython310libsite-packagesCryptoCipherAES.py", line 93, in _create_base_cipher
    raise ValueError("Incorrect AES key length (%d bytes)" % len(key))
ValueError: Incorrect AES key length (48 bytes)

I do not know what should be value of dkLen
Thanks for any help in advance.