Given a string, how do I know if it needs decoding
base64, python
Solution
In general, it's impossible; if you receive string 'MjMj', for example, how could you possibly know whether it's already decoded and needs to be used as is, or decoded into '23#'?
Problem
I'm using python's base64 module and I get a string that can be encoded or not encoded. I would like to do something like: ``` if isEncoded(s): output = base64.decodestring(s) else: output = s ``` ideas?