code: def unsigned_input(outpoint, redeem_script=None, sequence=None):
      '''
      Outpoint, byte-like, int -> TxIn
      '''
      if redeem_script is not None and sequence is None:
          sequence = guess_sequence(redeem_script)
      if sequence is None:
          sequence = 0xFFFFFFFE
      return tb.make_legacy_input(
          outpoint=outpoint,
          stack_script=b'',
          redeem_script=b'',
          sequence=sequencef unsigned_input(outpoint, redeem_script=None, sequence=None):
      '''
      Outpoint, byte-like, int -> TxIn
      '''
      if redeem_script is not None and sequence is None:
          sequence = guess_sequence(redeem_script)
      if sequence is None:
          sequence = 0xFFFFFFFE
      return tb.make_legacy_input(
          outpoint=outpoint,
          stack_script=b'',
          redeem_script=b'',
          sequence=sequence)
docs: Outpoint, byte-like, int -> TxIn