Please help with Python... Please clean up the code given above and make it read different input strings

import sys fopen("rb.txt") state - 0 # sys.argv[1], '' rb'') for byte in f.readO a -ord(byte) nbyte a-48 print("just read, a-", a, " byte-", byte) if state - 0: if nbyte-1: elif nbyte -- 0: else: state1 state - 0 print(" FATAL ERROR-1") elif state- 1: if nbyte elif nbyte -- 1: else: state 1 state - 0 print(" FATAL ERROR-2") print("finished reading the file, state-", state) import sys fopen("rb.txt") state - 0 # sys.argv[1], '' rb'') for byte in f.readO a -ord(byte) nbyte a-48 print("just read, a-", a, " byte-", byte) if state - 0: if nbyte-1: elif nbyte -- 0: else: state1 state - 0 print(" FATAL ERROR-1") elif state- 1: if nbyte elif nbyte -- 1: else: state 1 state - 0 print(" FATAL ERROR-2") print("finished reading the file, state-", state)