Convert numpy array to single number

[mboyd02255 at gmail.com]

I have a numpy array consisting of 1s and zeros for representing binary numbers:

e.g.

     >>> binary
     array([ 1.,  0.,  1.,  0.])

I wish the array to be in the form 1010, so it can be manipulated.

I do not want to use built in binary converters as I am trying to build my own.