对于[ -~]Python 2 范围内的ASCII字符：
>>> import binascii>>> bin(int(binascii.hexlify('hello'), 16))'0b110100001100101011011000110110001101111'相反：
>>> n = int('0b110100001100101011011000110110001101111', 2)>>> binascii.unhexlify('%x' % n)'hello'在Python 3.2+中：
>>> bin(int.from_bytes('hello'.enpre(), 'big'))'0b110100001100101011011000110110001101111'相反：
>>> n = int('0b110100001100101011011000110110001101111', 2)>>> n.to_bytes((n.bit_length() + 7) // 8, 'big').depre()'hello'要在Python中支持所有Unipre字符3：
def text_to_bits(text, encoding='utf-8', errors='surrogatepass'): bits = bin(int.from_bytes(text.enpre(encoding, errors), 'big'))[2:] return bits.zfill(8 * ((len(bits) + 7) // 8))def text_from_bits(bits, encoding='utf-8', errors='surrogatepass'): n = int(bits, 2) return n.to_bytes((n.bit_length() + 7) // 8, 'big').depre(encoding, errors) or ' '
这是与Python 2/3兼容的单源版本：
import binasciidef text_to_bits(text, encoding='utf-8', errors='surrogatepass'): bits = bin(int(binascii.hexlify(text.enpre(encoding, errors)), 16))[2:] return bits.zfill(8 * ((len(bits) + 7) // 8))def text_from_bits(bits, encoding='utf-8', errors='surrogatepass'): n = int(bits, 2) return int2bytes(n).depre(encoding, errors)def int2bytes(i): hex_string = '%x' % i n = len(hex_string) return binascii.unhexlify(hex_string.zfill(n + (n & 1)))
例
>>> text_to_bits('hello')'0110100001100101011011000110110001101111'>>> text_from_bits('110100001100101011011000110110001101111') == u'hello'True
