Convert 2 byte from byte array to one integer

Question

I have a list of bytearrays that looks like that :

data = [
   bytearray(b'\x01'),
   bytearray(b'\x03'),
   bytearray(b'\x04'),
   bytearray(b'\x01'),
   bytearray(b'\x05'),
   bytearray(b'\x00'),
   bytearray(b'\xC0'),
   bytearray(b'\xfa'),
   bytearray(b'3')
]

This array is what I read from a sensor. What I need is to uses data[3] and data[4] together (so 01 05 ) to convert this into an integer (should be 261) to get a value from the sensor. I struggle to do it. Can anyone help please?

Answer 1

int provides an alternative constructor for this:

>>> int.from_bytes(data[3] + data[4], 'big')
261