文字列⇔バイナリ変換

文字列→バイナリ

バイナリ→文字列

>>>chars = list(map(hex, map(ord, "hello")))
>>>chars
['0x68', '0x65', '0x6c', '0x6c', '0x6f']
>>>result = ''
>>>for i in chars:
...    result += chr(int(i, 16))
...    
>>>result
'hello'