CanInitializationError when creating Vector bus with parameters loaded from can config file

[nuts4coffee]

Describe the bug

Fail to create the bus object with Vector interface. The following error is raised.

can.exceptions.CanInitializationError: The requested CAN FD settings could not be set for channel 0. Another application might have set incompatible settings. These are the currently active settings: OrderedDict(
[('bitrate', 500000), ('data_bitrate', 2000000), ('sjw_abr', 16), ('tseg1_abr', 63), ('tseg2_abr', 16), ('sam_abr', 1), ('sjw_dbr', 4), ('tseg1_dbr', 15), ('tseg2_dbr', 4), ('output_mode', <XL_OutputMode.XL_OUTPU
T_MODE_NORMAL: 1>), ('can_op_mode', <XL_CANFD_BusParams_CanOpMode.4|XL_BUS_PARAMS_CANOPMODE_CANFD: 6>)]) 

The bus config parameters are set in can.ini file:

[default]
interface = vector
receive_own_messages=1
bitrate = 500000
data_bitrate = 2000000
channel = 0
app_name = Canalyzer
sjw_abr = 16
tseg1_abr = 63
tseg2_abr = 16
sjw_dbr = 4
tseg1_dbr = 15
tseg2_dbr = 4
fd = True

The timing parameters (e.g. sjw_abr and etc) are passed as str to the constructor, and compared to int values at
https://github.com/hardbyte/python-can/blob/v4.1.0/can/interfaces/vector/canlib.py#L262.

To Reproduce

This code works with python-can v4.0.0, but fails on python-can v4.1.0.

import can


def main():
    bus_config = {}
    bus = can.interface.Bus(**bus_config)
    print(bus)
    bus.shutdown()


if __name__ == '__main__':
    main()

Expected behavior

Bus object creation should not fail.

Additional context

OS and version: Windows 10
Python version: 3.7.9
python-can version: 4.1.0
python-can interface/s (if applicable): Vector

Traceback and logs

def func():
    return "hello, world!"

[zariiii9003]

Thanks for reporting, i can reproduce it.