convert to base64 string encodeing and vice versa

Question

I am trying to convert a string encoded variable (which originally is a hex guid) into the hex guid and back to the same string encoded version.

I am doing this using base64 package of the python standard library

>>> import base64
>>> guid
'Dw8OAwQFBgcIBQABAgMEBw==\n'
>>> cguid=base64.decodestring(guid).encode('hex')
'0f0f0e03040506070805000102030407'

Above code accomplishes the task. Now I need to convert the variable cguid back to guid.

How do I accomplish the task?

I have tried switching the decode and encode but it does not seem to work. It shows me an error.

>>> base64.encodestring(cguid).decode('hex')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/nb/python/lib/python2.7/encodings/hex_codec.py", line 42, in hex_decode
    output = binascii.a2b_hex(input)
TypeError: Odd-length string
>>>

Marcus · Accepted Answer · 2012-09-17 16:58:50Z

2

base64.encodestring(cguid).decode('hex') => base64.encodestring(cguid.decode('hex'))

answered Sep 17, 2012 at 16:58

Marcus

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1 Comment

ronak Over a year ago

Didnt realize that I had to decode it in hex before I could encode it. Thanks Marcus!

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