Method parse

code-ch13/tx.py:108–115

(cls, s, testnet=False)

    # tag::source2[]
    @classmethod
    def parse(cls, s, testnet=False):
        s.read(4)  # <1>
        if s.read(1) == b'\x00':  # <2>
            parse_method = cls.parse_segwit
        else:
            parse_method = cls.parse_legacy
        s.seek(-5, 1)  # <3>
        return parse_method(s, testnet=testnet)

    @classmethod
    def parse_legacy(cls, s, testnet=False):