MATLAB Stream vs. Python

Question

Times ago, I wrote this MATLAB code snippet to write data to a serial object (hardware receiver)

try
    fwrite(serialObj, codeDEC, 'uint8', 'async');
    pause(0.01);
catch
    stopasync(serialObj);
    fwrite(serialObj, codeDEC, 'uint8', 'async');
    pause(0.01);
end

After initialization,communication opens:

serialObj = serial(COMportR,'BaudRate',57600);
set(serialObj,'InputBufferSize', 2^12);
set(serialObj,'FlowControl','hardware');
set(serialObj,'RequestToSend','on');
fopen(serialObj);

Now, I wanted to bring my MATLAB project to Python, so I wrote this code to connect to my device:

import serial
ser = serial.Serial()
ser.port = COMPortR
ser.baudrate = 57600
ser.open()

but I'm not able to set InputBufferSize, FlowControl and RequestToSend. I couldn't find any solution in the pySerial docs.

Then, in the first snippet can I send bytes data instead of uint8? And how can I set the "async" mode?