python，要转换为字符串/整数的十六进制值
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python, hex values to convert to a string/integer
提问by Sazzy
I'm looking how I can take hex values, and turn them into a string or an integer. Examples:
我正在研究如何获取十六进制值，并将它们转换为字符串或整数。例子：
>>> a = b'\x91\x44\x77\x65\x92'
>>> b = b'\x44\x45\x41\x44\x42\x45\x45\x46'
>>> a
>>> ?Dwe?
>>> b
>>> 'DEADBEEF'
Desired results for aand b:
a和b 的预期结果：
>>> 9144776592
>>> '4445414442454546'
Thank you.
谢谢你。
采纳答案by alecxe
>>> a = b'\x91\x44\x77\x65\x92'
>>> a.encode("hex")
'9144776592'
>>> b.encode('hex')
'4445414442454546'
Note, that it's not nice to use encode('hex')- here's an explanationwhy:
请注意，使用起来并不好encode('hex')- 以下是原因的解释：
The way you use the hex codec worked in Python 2 because you can call encode() on 8-bit strings in Python 2, ie you can encode something that is already encoded. That doesn't make sense. encode() is for encoding Unicode strings into 8-bit strings, not for encoding 8-bit strings as 8-bit strings.
In Python 3 you can't call encode() on 8-bit strings anymore, so the hex codec became pointless and was removed.
您使用十六进制编解码器的方式在 Python 2 中起作用，因为您可以在 Python 2 中对 8 位字符串调用 encode()，即您可以对已经编码的内容进行编码。那没有意义。encode() 用于将 Unicode 字符串编码为 8 位字符串，而不是用于将 8 位字符串编码为 8 位字符串。
在 Python 3 中，您不能再对 8 位字符串调用 encode()，因此十六进制编解码器变得毫无意义并被删除了。
Using binasciiis easier and nicer, it is designed for conversions between binary and ascii, it'll work for both python 2 and 3:
使用binascii更简单更好，它是为二进制和 ascii 之间的转换而设计的，它适用于 python 2 和 3：
>>> import binascii
>>> binascii.hexlify(b'\x91\x44\x77\x65\x92')
b'9144776592'
回答by falsetru
Using binascii.hexlify:
>>> import binascii
>>> a = b'\x91\x44\x77\x65\x92'
>>> b = b'\x44\x45\x41\x44\x42\x45\x45\x46'
>>> binascii.hexlify(a)
b'9144776592'
>>> binascii.hexlify(b)
b'4445414442454546'
回答by Ashwini Chaudhary
Use binascii.hexlify:
In [1]: from binascii import hexlify
In [2]: a = b'\x91\x44\x77\x65\x92'
In [3]: hexlify(a)
Out[3]: b'9144776592'
In [4]: b = b'\x44\x45\x41\x44\x42\x45\x45\x46'
In [5]: hexlify(b)
Out[5]: b'4445414442454546'
If you want strinstead of bytes:
如果你想要str而不是字节：
In [7]: hexlify(a).decode('ascii')
Out[7]: '9144776592'
