Python 字节数组打印

Question

I have an integer list in Python that should correspond to the following int values (which can be changed to hex byte values):

[10, 145, 140, 188, 212, 198, 210, 25, 152, 20, 120, 15, 49, 113, 33, 220, 124, 67, 174, 224, 220, 241, 241]

However, when I convert that list to a bytearray (using bytearray(nameOfList)), I get the following printout.

bytearray(b'\n\x91\x8c\xbc\xd4\xc6\xd2\x19\x98\x14x\x0f1q!\xdc|C\xae\xe0\xdc\xf1\xf1')

I can pull the correct values from this byte array, regardless of how it prints, but shouldn't the bytearray printout correspond to the hex values of the byte array? (I mean, it seems to mostly follow the hex values up until after \x0f, where it starts putting out gibberish...)

Answer 1

>>> x = bytearray(b'\n\x91\x8c\xbc\xd4\xc6\xd2\x19\x98\x14x\x0f1q!\xdc|C\xae\xe0
\xdc\xf1\xf1')
>>> import binascii
>>> print binascii.hexlify(x)
0a918cbcd4c6d2199814780f317121dc7c43aee0dcf1f1

Use binascii if you want all of it to be printed as a hex string

Answer 2

It looks fine to me. It's just rendering bytes as ASCII characters whenever possible. After 15= \\x0f you have 49='1' and 113='q', etc.

See http://asciitable.com

Answer 3

Use bytes.hex()

>>> x = bytearray([0x01,0x02,0xff])
>>> print(x.hex())
0102ff

Answer 4

This is probably not very performant at large sizes, but I find this makes it easier to read:

buff = bytearray(list(range(10)))
print(buff)
print(", ".join(hex(b) for b in buff))

prints

bytearray(b'\x00\x01\x02\x03\x04\x05\x06\x07\x08\t')
0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9