Python 3 1 1 string to hex

Question

I am trying to use str encode   but I get   gt  gt  gt   hello  encode hex  Traceback  most recent call last     File   lt stdin gt    line 1  in  lt module gt  TypeError  must be string  not builtin function or method   I have tried a bunch of variations and they seem to all work in Python 2 5 2  so what do I need to do to get them to work in Python 3 1

User · Answer

Yet another method   s    hello   h      join  hex ord i   for i in s       outputs   0x680x650x6c0x6c0x6f    This basically splits the string into chars  does the conversion through hex ord char    and joins the chars back together  In case you want the result without the prefix 0x then do   h      join  str hex ord i    2 4  for i in s       outputs   68656c6c6f    Tested with Python 3 5 3

User · Answer

base64 b16encode and base64 b16decode convert bytes to and from hex and work across all Python versions   The codecs approach also works  but is less straightforward in Python 3

User · Answer

binascii methodes are easier by the way   gt  gt  gt  import binascii  gt  gt  gt  x b test   gt  gt  gt  x binascii hexlify x   gt  gt  gt  x b 74657374   gt  gt  gt  y str x  ascii    gt  gt  gt  y  74657374   gt  gt  gt  x binascii unhexlify x   gt  gt  gt  x b test   gt  gt  gt  y str x  ascii    gt  gt  gt  y  test    Hope it helps

User · Answer

The hex codec has been chucked in 3 x  Use binascii instead    gt  gt  gt  binascii hexlify b hello   b 68656c6c6f

User · Answer

In Python 3  all strings are unicode  Usually  if you encode an unicode object to a string  you use  encode  TEXT ENCODING    since hex is not a text encoding  you should use codecs encode   to handle arbitrary codecs  For example    gt  gt  gt  gt   hello  encode  hex   LookupError   hex  is not a text encoding  use codecs encode   to handle arbitrary codecs  gt  gt  gt  gt  import codecs  gt  gt  gt  gt  codecs encode b hello    hex   b 68656c6c6f    Again  since  hello  is unicode  you need to indicate it as a byte string before encoding to hexadecimal  This may be more inline with what your original approach of using the encode method   The differences between binascii hexlify and codecs encode are as follow    binascii hexlify  Hexadecimal representation of binary data   The return value is a bytes object   Type       builtin function or method codecs encode  encode obj   encoding  errors    -  object  Encodes obj using the codec registered for encoding  encoding defaults to the default encoding  errors may be given to set a different error handling scheme  Default is  strict  meaning that encoding errors raise a ValueError  Other possible values are  ignore    replace  and  xmlcharrefreplace  as well as any other name registered with codecs register error that can handle ValueErrors   Type       builtin function or method

User · Answer

You ve already got some good answers  but I thought you might be interested in a bit of the background too   Firstly you re missing the quotes  It should be    hello  encode  hex     Secondly this codec hasn t been ported to Python 3 1  See here  It seems that they haven t yet decided whether or not these codecs should be included in Python 3 or implemented in a different way   If you look at the diff file attached to that bug you can see the proposed method of implementing it   import binascii output   binascii b2a hex input

User · Answer

Use hexlify - http   epydoc sourceforge net stdlib binascii-module html

User · Answer

In Python 3 5   encode the string to bytes and use the hex   method  returning a string   s    hello  encode  utf-8   hex   s    68656c6c6f    Optionally convert the string back to bytes   b   bytes s   utf-8   b   b 68656c6c6f

User · Answer

The easiest way to do it in Python 3 5 and higher is    gt  gt  gt   halo  encode   hex    68616c6f    If you manually enter a string into a Python Interpreter using the utf-8 characters  you can do it even faster by typing b before the string    gt  gt  gt  b halo  hex    68616c6f    Equivalent in Python 2 x    gt  gt  gt   halo  encode  hex    68616c6f

[python] Python 3.1.1 string to hex

Examples related to python

Examples related to string

Examples related to python-3.x

Examples related to hex