[Tutor] string to binary and back... Python 3

[Prasad, Ramit]

> 
> I think your basic problem is too much conversion because you do not
> understand the types. A string is represented by a series of bytes
> which are binary numbers. Do you understand the concept behind ASCII?
> Each letter has a numeric representation that are sequential.
> So the string 'abcd' is equivalent to a series of bytes 65,66,67,68.
> It is not equivalent to 65666768 or 65+66+67+68. So your first
> task is to convert each character to the numeric equivalent and store
> them in a list. Once you have them converted to a list of integers,
> you can create another list that is a list of characters.
> 
> Look at the functions chr and ord here
> ( http://docs.python.org/py3k/library/functions.html )

I forgot to say, that once you have the integer equivalents, 
you can then convert that easily to binary using bin.
I used ast.literal_eval to convert from binary string 
(as returned from bin) to number, but there might be better
ways.

 
Ramit

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