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convert hex encoded string to ASCII
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convert hex encoded string to ASCII
#1
given a string of hexadecimal characters that represent ASCII characters, i want to convert it to those ASCII characters.  for example:

'707974686f6e2d666f72756d2e696f' -> 'python-forum.io'

in python 2 i can do .decode('hex') but this is gone in python3. so, i found this:
codecs.decode(codecs.decode('707974686f6e2d666f72756d2e696f','hex'),'ascii')
anything simpler that works in either python 2 or python 3 ?
Tradition is peer pressure from dead people

What do you call someone who speaks three languages? Trilingual. Two languages? Bilingual. One language? American.
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#2
How about
codecs.decode("707974686f6e2d666f72756d2e696f", "hex")
Does it give the result you want?
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#3
Personally, I've found the fromhex method of bytes to be useful.

print(bytes.fromhex('7370616d'))    # b'spam'
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#4
(Sep-29-2016, 07:45 AM)j.crater Wrote: How about
codecs.decode("707974686f6e2d666f72756d2e696f", "hex")
Does it give the result you want?

not in py 3.  i want an ASCII or UTF-8 string, not an array of bytes. this why i added the 2nd call to codecs.decode(,"ascii").
Tradition is peer pressure from dead people

What do you call someone who speaks three languages? Trilingual. Two languages? Bilingual. One language? American.
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#5
Quote:this why i added the 2nd call to codecs.decode(,"ascii")
You don't need a second call,just add .decode('utf-8').
>>> codecs.decode("707974686f6e2d666f72756d2e696f", "hex").decode('utf-8')
'python-forum.io'
It will work the same in Python 2.x
>>> codecs.decode("707974686f6e2d666f72756d2e696f", "hex").decode('utf-8')
u'python-forum.io'
Strings are Unicode by default in Python 3.x.
>>> u'python-forum.io' == 'python-forum.io'
True
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