Unable to bit shift and logical OR bytes and ints?

[MysticLord]

Python 3.8.2
Windows 10
Powershell

I'm trying to grab a set of 32 bit little-endian pointers from the headers in a set of 256 files, and print them sequentially with line breaks between them.

import sys,glob

def printFileAddr(fileName):
    with open(fileName,"rb") as file:
        file.seek(36,0)
        address = file.read(1)
        address = ((file.read(1) << 8) | address)
        address = ((file.read(1) << 16) | address)
        address = ((file.read(1) << 24) | address)
        print(str(address) + "\n")

for arg in sys.argv[1:]:
    for files in glob.glob(arg):
        printFileAddr(files)

Output

PS C:\Users\pc\Projects\romhack\sagaFrontier\scripts> python .\printArc.py .\M000.ARC         
Traceback (most recent call last):                                                            
  File ".\printArc.py", line 14, in <module>                                                  
    printFileAddr(files)                                                                      
  File ".\printArc.py", line 7, in printFileAddr                                              
    address = ((file.read(1) << 8) | address)                                                 
TypeError: unsupported operand type(s) for <<: 'bytes' and 'int'                              
PS C:\Users\pc\Projects\romhack\sagaFrontier\scripts>                                         

1. Why doesn't Python allow one to bitshift numbers? Why have bitwise operators if you can't use them?

Here's what it prints when I comment out the lines with bit shifting and logical OR.

PS C:\Users\pc\Projects\romhack\sagaFrontier\scripts> python .\printArc.py .\M000.ARC         
b'`'

2. Why is it not printing the numeric value of the byte?