hex.py

import sys 

if len(sys.argv) != 2:
    print("usage: hex.py [file]")
    sys.exit(1)

filename = sys.argv[0]

with open(filename,'rb') as f:
    buff = f.read()

out_hex = ['{:02X}'.format(b) for b in buff]

[print(f"0x{i}", end=', ') for i in out_hex]
print()