Question

I am using 2.5 on GAE using some of the Crypto modules from gdata python modules. I am able to use hashAndSign on a string, but the function returns an array.array of ‘B’ unsigned characters.

I’m still experimenting on getting it all together, but one thing I’m stumbling on now is getting an:

array('B', [120, 231, 49, 2, 125, 143, 213, 14, 214, 66, 52, 11, 124, 154, 99, 179])

to be a string representation like:

'x\xe71\x02}\x8f\xd5\x0e\xd6B4\x0b|\x9ac\xb3'

How can I get the array to be a string like that?

I know this is a simple thing, but it is stumping me.

I need this so I can do a .encode(‘base64’) to send to my client app which hopefully will be able to use it to verify the string I signed.

Answer 1

Your question title “Python 2.5 version of array.array.tostring()?” is puzzling. The tostring() method of array.array objects has been available for a very long time:

Python 1.5.2 (#0, Apr 13 1999, 10:51:12) [MSC 32 bit (Intel)] on win32
Copyright 1991-1995 Stichting Mathematisch Centrum, Amsterdam
>>> import array
>>> q = array.array('B', [120, 231, 49, 2, 125, 143, 213, 14, 214, 66, 52, 11, 124, 154, 99, 179])
>>> q.tostring()
'x\3471\002}\217\325\016\326B4\013|\232c\263'
>>>

Aside: Yes, that’s right, once upon a time, repr() did octal, not hex.

What did you actually try in Python 2.5? What was the outcome? Copy/paste the full stack trace and error message into an edit of your question.